Synthesis, Characterization and Evaluation of Photophysical and Electrochemical Properties of Ruthenium(II) Complexes for Dye-sensitized Solar Cells

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Total Pages : 716 pages
Book Rating : 4.:/5 (122 download)

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Book Synopsis Synthesis, Characterization and Evaluation of Photophysical and Electrochemical Properties of Ruthenium(II) Complexes for Dye-sensitized Solar Cells by : Shadrack John Adjogri

Download or read book Synthesis, Characterization and Evaluation of Photophysical and Electrochemical Properties of Ruthenium(II) Complexes for Dye-sensitized Solar Cells written by Shadrack John Adjogri and published by . This book was released on 2018 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis, Characterization and Evaluation of Ruthenium(II) Polypyridyl Complexes as Sensitizer for Dye Sensitized Solar Cells

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ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.:/5 (123 download)

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Book Synopsis Synthesis, Characterization and Evaluation of Ruthenium(II) Polypyridyl Complexes as Sensitizer for Dye Sensitized Solar Cells by : Andile Mkhohlakali

Download or read book Synthesis, Characterization and Evaluation of Ruthenium(II) Polypyridyl Complexes as Sensitizer for Dye Sensitized Solar Cells written by Andile Mkhohlakali and published by . This book was released on 2015 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis, Characterization and Evaluation of Ru(II) and Co(II) Complexes of Some Nitrogen Chelating Ligands as Sensitizers for Dye Sensitized Solar Cells (DSSCs)

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ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (123 download)

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Book Synopsis Synthesis, Characterization and Evaluation of Ru(II) and Co(II) Complexes of Some Nitrogen Chelating Ligands as Sensitizers for Dye Sensitized Solar Cells (DSSCs) by : Mathato Petronella Motaung

Download or read book Synthesis, Characterization and Evaluation of Ru(II) and Co(II) Complexes of Some Nitrogen Chelating Ligands as Sensitizers for Dye Sensitized Solar Cells (DSSCs) written by Mathato Petronella Motaung and published by . This book was released on 2015 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cyclometallated Compounds of Ruthenium (II)

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Total Pages : 288 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Cyclometallated Compounds of Ruthenium (II) by : Patricio G. Reveco

Download or read book Cyclometallated Compounds of Ruthenium (II) written by Patricio G. Reveco and published by . This book was released on 1985 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract.

The Synthesis, Electrochemical, Spectroscopic, and Photophysical Characterisation of Ruthenium(II) Polypyridyl Complexes Containing Quinone/hydroquinone Moieties

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ISBN 13 :
Total Pages : 327 pages
Book Rating : 4.:/5 (87 download)

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Book Synopsis The Synthesis, Electrochemical, Spectroscopic, and Photophysical Characterisation of Ruthenium(II) Polypyridyl Complexes Containing Quinone/hydroquinone Moieties by : Tia E. Keyes

Download or read book The Synthesis, Electrochemical, Spectroscopic, and Photophysical Characterisation of Ruthenium(II) Polypyridyl Complexes Containing Quinone/hydroquinone Moieties written by Tia E. Keyes and published by . This book was released on 1994 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:

N3-type Ruthenium Rigid Rod Dyes and N3-type Ruthenium Bifunctional Dyes for Studying Solar Cell Properties

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ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (856 download)

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Book Synopsis N3-type Ruthenium Rigid Rod Dyes and N3-type Ruthenium Bifunctional Dyes for Studying Solar Cell Properties by : Andrew Kopecky

Download or read book N3-type Ruthenium Rigid Rod Dyes and N3-type Ruthenium Bifunctional Dyes for Studying Solar Cell Properties written by Andrew Kopecky and published by . This book was released on 2013 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the synthesis and study of two types of ruthenium(II) bipyridyl complexes that were developed to study sensitization processes on TiO2 surfaces. The thesis will be separated into two parts: the synthesis, characterization, and study of rigid rod dyes to investigate Voc and recombination, and the synthesis and preliminary results of thiol-substituted dyes that were developed to study the influence of platinum catalysis on redox mediator processes in dye-sensitized solar cells. Rigid rod dyes, AK0, AK1, and AK2, a series of bis(bipyridyl) bis(thiocyanate) ruthenium(II) dyes (N3-type), were synthesized to study how dye structure affects voltage. Dyes AK0-2 were synthesized through a one-pot complexation reaction with modified dipyridyl ligands containing 0, 1, or 2 oligo(phenyleneethynylene) bridge units, respectively, to study the effect of the chromophore-semiconductor distance. The dyes were characterized and their photophysical and photoelectrochemical properties were studied in solution and on TiO2 films. In DSSCs, the dyes showed an increase in Voc due to decreased charge recombination rates with increasing semiconductor-chromophore distance. The recombination rate also showed decreased sensitivity to TiO2 electron concentrations as the chromophore-semiconductor distance increased. A second series of rigid-rod, N3-type dyes, AK3 and AK4, was synthesized through a two-step complexation process proceeding through isolation of a p-cymene ruthenium(II) intermediate. These dyes contained long, saturated alkyl chain (nonyl) substituents on the ancillary bipyridyl ligand, with the goal of increasing solubility and facilitating solution characterization. These dyes were characterized synthetically and currently are being studied for I2-adduct formation. The modified thiol dyes were targeted for studying the catalytic process of redox mediator regeneration. As platinum has been shown to catalyze the I-/I3- redox reaction, it was thought that by incorporating platinum nanoparticles into DSSCs the large overpotential for the I-/I3- redox mediator could be reduced. A modified N3-type dye was designed with carboxylic acid groups for anchoring to TiO2 in the DSSC on one bipyridyl ligand and thiols on the other for attachment to platinum. The synthesis of the novel thiolane bipyridyl ligand was followed by a two-step complexation process and both ligand and dye were successfully synthesized and characterized. The dye, AK6, shows positive current and efficiencies of approximately 3% when used as a sensitizer in an operational DSSC. It has also been shown to bind to platinum wire. These preliminary results suggest that this dye may allow for incorporation of platinum nanoparticles into the DSSC, which is currently being investigated.

Synthesis of Photosensitizing Molecules and Fabrication of Inorganic Nanostructures for Dye-Sensitized Solar Cell

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Publisher : Open Dissertation Press
ISBN 13 : 9781361309025
Total Pages : pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Synthesis of Photosensitizing Molecules and Fabrication of Inorganic Nanostructures for Dye-Sensitized Solar Cell by : Hung-Tat Chan

Download or read book Synthesis of Photosensitizing Molecules and Fabrication of Inorganic Nanostructures for Dye-Sensitized Solar Cell written by Hung-Tat Chan and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Synthesis of Photosensitizing Molecules and Fabrication of Inorganic Nanostructures for Dye-sensitized Solar Cell" by Hung-tat, Chan, 陳鴻達, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Dye-sensitized solar cells (DSSC) have drawn much attention due to their higher versatility and lower production cost compared to inorganic photovoltaics. The top performers of DSSC have achieved power conversion efficiency over 10%, which is comparable to amorphous silicon solar cells. In this work, new photosensitizers and nanostructure for improving the photovoltaic performance of DSSC were developed and evaluated. Two series of cyclometalated ruthenium(II) complex photosensitizer were presented and their photosensitizing properties in DSSC were studied. Eight cyclometalated ruthenium(II) terpyridine complexes with three carboxylic acid groups on the terpyridine ligand were synthesized. Series A (M1 to M4) consist of C, N, N' ligands substituted with phenyl group whereas series B (M5 to M8) consist of C, N, N' ligands substituted with m-fluorophenyl group. All of the complexes exhibited broad aborption spectra covering the whole visible spectrum. The complexes in series B generally showed better photovoltaic performance than those in series A in the DSSCs. DSSC fabricated from M7 achieved the highest Voc, Jsc and power conversion efficiency among other DSSC, which were 0.56 V, 7.30 mAcm-2 and 2.63 % respectively. Truxene-core donor--acceptor dyes were presented and their photosensitizing properties in DSSC were studied. Eight dyes with either one donor two acceptors system (T2, B2, T2R and B2R) or two donor one acceptor system (T1, B1, T1R and B1R) were synthesized. Dyes with two acceptors have high molar extinction coefficients originated from the charge-transfer transition band, which are almost two times higher than those with only one accceptors. Both the enhanced absorption and better anchoring geometry on TiO2 contribute to the better photovoltaic performance of the two acceptors dyes in the DSSCs. Devices fabricated from B2 and volatile solvent electrolyte exhibited the best photovoltaic performance among the truxene-core dyes. The Voc, Jsc, FF and power conversion efficiency of the device were 0.59 V, 9.69 mAcm-2, 0.63 and 3.62 % respectively. Dyes based on cyanoacrylic acid anchoring groups (T1, T2, B1 and B2) were found to perform better than those based on rhodanine-3-acetic acid dyes (T1R, T2R, B1R and B2R) in both donor--acceptor configurations. ITO nanorod/TiO2 nanoparticle composite films with the three different types of ITO nanorod with different length (150 nm, 600 nm and 1.5 μm) were fabricated on FTO glass substrate. The transmittance and sheet resistance of the ITO nanorod array on the FTO glass substrate were found decreased with increasing the length of the ITO nanorod. When the ITO nanorod/TiO2 nanoparticle composite films were applied as the anode in DSSCs, the device fabricated from 600 nm ITO nanorod with TiO2 'double layer' film showed enhanced photocurrent generation. The improved photocurrent generation is suggested to be due to an improved charge collection efficiency at the ITO nanorod back electrode. DOI: 10.5353/th_b4784934 Subjects: Nanostructured materials - Synthesis Dye-sensitized solar cells

Design, Synthesis and Characterization of Ruthenium(ii) and Rhenium(i) Complexes with Functionalized Ligands for Photo-And Electrochemi- Luminescence, Solvatochromism, Molecular Recognition and HPLC Separation Studies

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Publisher : Open Dissertation Press
ISBN 13 : 9781361428276
Total Pages : pages
Book Rating : 4.4/5 (282 download)

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Book Synopsis Design, Synthesis and Characterization of Ruthenium(ii) and Rhenium(i) Complexes with Functionalized Ligands for Photo-And Electrochemi- Luminescence, Solvatochromism, Molecular Recognition and HPLC Separation Studies by : Meijin Li

Download or read book Design, Synthesis and Characterization of Ruthenium(ii) and Rhenium(i) Complexes with Functionalized Ligands for Photo-And Electrochemi- Luminescence, Solvatochromism, Molecular Recognition and HPLC Separation Studies written by Meijin Li and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Design, Synthesis and Characterization of Ruthenium(II) and Rhenium(I) Complexes With Functionalized Ligands for Photo-and Electrochemi- Luminescence, Solvatochromism, Molecular Recognition and HPLC Separation Studies" by Meijin, Li, 李梅金, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled DESIGN, SYNTHESIS AND CHARACTERIZATION OF RUTHENIUM(II) AND RHENIUM(I) COMPLEXES WITH FUNCTIONALIZED LIGANDS FOR PHOTO- AND ELECTROCHEMI- LUMINESCENCE, SOLVATOCHROMISM, MOLECULAR RECOGNITION AND HPLC SEPARATION STUDIES Submitted by LI MEIJIN for the degree of Doctor of Philosophy at The University of Hong Kong in July 2006 A series of ruthenium(II) and rhenium(I) diimine complexes containing thia-, selena- and aza-crowns derived from 1,10-phenanthroline, [Ru(bpy) (phen-3S)](ClO ) 2 4 2 (phen-3S = 1,13-dioxa-4,7,10-trithiacyclopentadecano[2,3-f][1,10]phenanthroline), [Ru(bpy) (phen-2S)](ClO ) (phen-2S = 1,7,10,16-tetraoxa-4,13-dithiacyclohexa- 2 4 2 dodecano[2,3-f][1,10]phenanthroline), [Ru(bpy) (phen-S)](ClO ) (phen-S = 1,4,10,13- 2 4 2 tetraoxa-7-thiacyclopentadecano[2,3-f][1,10]phenanthroline), [Ru(bpy) (phen-Se)](ClO ) 2 4 2 (phen-Se = 1,4,10,13-tetraoxa-7-selenacyclopentadecano[2,3-f][1,10]phenanthroline), [Ru(bpy) (phen-OEt](ClO ) (phen-OEt = 5,6-diethoxy-[1,10]phenanthroline), 2 4 2 [Ru(bpy) (phen-2NH)](ClO ) (phen-2NH = 1,13-diaxa-4,7,10-trioxacyclopenta- 2 4 2 decano[2,3-f][1,10]phenanthroline), [Re(CO) (py)(phen-3S)]PF, [Re(CO) (py)(phen-S)]OTf 3 6 3 and [Re(CO) (py)(phen-Se)]OTf have been synthesized and characterized, and their photophysics, electrogenerated chemiluminescence (ECL) and electrochemistry were studied. Their interaction with metal ions was investigated by UV-vis, luminescence, NMR spectroscopy and ECL. [Ru(bpy) (phen-3S)](ClO ) and [Re(CO) (py)(phen-3S)]

Synthesis, Characterization and Photophysical Studies of RU(II) Bipyridyl-dithiocarbamate Complexes as Sensitizers for Dye Sensitized Solar Cells

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Total Pages : 254 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Synthesis, Characterization and Photophysical Studies of RU(II) Bipyridyl-dithiocarbamate Complexes as Sensitizers for Dye Sensitized Solar Cells by : Zintle Fudo

Download or read book Synthesis, Characterization and Photophysical Studies of RU(II) Bipyridyl-dithiocarbamate Complexes as Sensitizers for Dye Sensitized Solar Cells written by Zintle Fudo and published by . This book was released on 2018 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ruthenium Complexes

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Publisher : John Wiley & Sons
ISBN 13 : 3527339574
Total Pages : 344 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Ruthenium Complexes by : Alvin A. Holder

Download or read book Ruthenium Complexes written by Alvin A. Holder and published by John Wiley & Sons. This book was released on 2018-02-27 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by a team of highly respected researchers combining their expertise in chemistry, physics, and medicine, this book focuses on the use of rutheniumcontaining complexes in artificial photosynthesis and medicine. Following a brief introduction to the basic coordination chemistry of ruthenium complexes and their synthesis in section one, as well as their photophysical and photochemical properties, the authors discuss in detail the major concepts of artificial photosynthesis and mechanisms of hydrogen production and water oxidation with ruthenium in section two. The third section of the text covers biological properties and important medical applications of ruthenium complexes as therapeutic agents or in diagnostic imaging. Aimed at stimulating research in this active field, this is an invaluable information source for researchers in academia, health research institutes and governmental departments working in the field of organometallic chemistry, green and sustainable chemistry as well as medicine/drug discovery, while equally serving as a useful reference also for scientists in industry.

Synthesis and Photophysical Properties of Ruthenium-based Compounds

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ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (787 download)

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Book Synopsis Synthesis and Photophysical Properties of Ruthenium-based Compounds by : Farah Hasan Matar

Download or read book Synthesis and Photophysical Properties of Ruthenium-based Compounds written by Farah Hasan Matar and published by . This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ruthenium poly-pyridyl compounds, RuLH, RuLCOOH and RuLOMe have been synthesized and their photophysical properties have been studied. It was shown that the sub stitution of one bipyridine ligand of a ruthenium tris-bipyridine with a stilben oid-bipyridine ligand does not affect the HOMO energy levels of the ruthenium ce nter. However, this modification results in lowering the LUMO energy levels by 0 .2 eV which in turn leads to a red-shift in the absorption spectrum. Also, we r eport the synthesis and characterization of a novel ruthenium-based dye, TG6. Th is complex shows good absorption properties in comparison to the one of the most efficient sensitizer (N3 dye), which may allow us to present this dye as a prom ising sensitizer in dye-sensitized solar cell systems.

Synthesis of Ruthenium-based Dendrimers and Their Use in Dye Sensitized Solar Cells

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ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (787 download)

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Book Synopsis Synthesis of Ruthenium-based Dendrimers and Their Use in Dye Sensitized Solar Cells by : Ali Haidar Younes

Download or read book Synthesis of Ruthenium-based Dendrimers and Their Use in Dye Sensitized Solar Cells written by Ali Haidar Younes and published by . This book was released on 2007 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first generation (Ru3) and the second generation (Ru6) dendrimers have been synthesized and characterized by UV-Vis absorption and NMR spectroscopy. The per formance of the first and second generations dendrimers as charge transfer photo sensitizers in nanocrytalline TiO2 based solar cells was investigated. Under the illumination of 100 mW/cm2, using a Solaronix Iodolyte MPN-100 electrolyte cons isting of 0.05 M I2 [iodine], 0.1 M LiI, and 0.5 M 4-tertbutyl pyridine in 3-met hoxypropionitrile. The best photovoltaic performance has been obtained by the Ru 3 film yielding a short circuit current of 4.17 mA/cm2 and an open circuit volta ge of 626 mV and a fill factor of 0.51, corresponding to an overall conversion e fficiency of 1.34% that is approximately the double of the conversion efficienci es of that of the reference compound Ru1 (0.54%) and of the second generation de ndrimer Ru6 (0.56%). The particular efficiency of the first generation dendrimer, Ru3, was attributed to the better light-harvesting properties when the Ru3 dye is doped on the nanocrysatlline TiO2 surface when compared to the reference com pound, Ru1. In addition to the synthesis of Ru3 and Ru6, we report the synthesis and characterization of a novel ruthenium (II) complex (dye A).

Counter Electrodes for Dye-Sensitized and Perovskite Solar Cells (2 Vols.)

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Publisher : John Wiley & Sons
ISBN 13 : 3527813608
Total Pages : 812 pages
Book Rating : 4.5/5 (278 download)

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Book Synopsis Counter Electrodes for Dye-Sensitized and Perovskite Solar Cells (2 Vols.) by : Sining Yun

Download or read book Counter Electrodes for Dye-Sensitized and Perovskite Solar Cells (2 Vols.) written by Sining Yun and published by John Wiley & Sons. This book was released on 2018-08-31 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to one of the most important aspects for affordable and highly efficient dye-sensitized solar cells Dye-sensitized solar cells have the potential to be one of the most promising photovoltaic technologies for production of renewable and clean energy. Counter Electrodes for Dye-Sensitized and Perovskite Solar Cells offers an introduction to the various types of counter electrode catalysts for dye-sensitized solar cells and perovskite solar cells, including metal and metal compounds, carbon materials, polymers, and composites. With contributions from an international panel of experts, the book contains a discussion of the design and synthesis of the catalysts, characterization and stability of the devices, as well as calculations on properties. The contributors cover a wide range of topics including information on: carbon nanotubes electrocatalysts for I-mediated dye-sensitized solar cells; Pt-loaded composite electrocatalysts for I-mediated dye-sensitized solar cells; metal contact electrodes for perovskite solar cells; and much more. The book also includes insight into the future developments in the field. This important resource Covers the various types of counter electrode catalysts and presents design strategies, synthesis methods, theoretical calculation and stability evaluation Includes information on low-cost counter electrode catalysts and commercial applications of dye-sensitized sensitized solar cells Disscuses how electrode catalysts can be applied in a range of fields, such as solar cells, fuel cells, hydrogen production, and photocatalysis Offers contributions from leading experts in the field including Anders Hagfeldt, one of the world's leading researchers in this field Written for materials scientists, solid state chemists, electrochemists, catalytic chemists, solid state physicists, and chemical industry professionals, Counter Electrodes for Dye-Sensitized and Perovskite Solar Cells is a comprehensive and authoritative guide to dye-sensitized solar cells.

Synthesis and Characterization of Dyes with Solar Energy Applications

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ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (834 download)

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Book Synopsis Synthesis and Characterization of Dyes with Solar Energy Applications by : Bradley J. Brennan

Download or read book Synthesis and Characterization of Dyes with Solar Energy Applications written by Bradley J. Brennan and published by . This book was released on 2012 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sun provides Earth with a virtually limitless source of energy capable of sustaining all of humanity's needs. Photosynthetic organisms have exploited this energy for eons. However, efficiently converting solar radiation into a readily available and easily transportable form is complex. New materials with optimized physical, electrochemical, and photophysical properties are at the forefront of organic solar energy conversion research. In the work presented herein, porphyrin and organometallic dyes with widely-varied properties were studied for solar energy applications. In one project, porphyrins and porphyrin-fullerene dyads with aniline-like features were polymerized via electrochemical methods into semiconductive thin films. These were shown to have high visible light absorption and stable physical and electrochemical properties. However, experimentation using porphyrin polymer films as both the light absorber and semiconductor in a photoelectrochemical cell showed relatively low efficiency of converting absorbed solar energy into electricity. In separate work, tetra-aryl porphyrin derivatives were examined in conjunction with wide-bandgap semiconductive oxides TiO2 and SnO2. Carboxylic acid-, phosphonic acid-, and silatrane-functionalized porphyrins were obtained or synthesized for attachment to the metal oxide species. Electrochemical, photophysical, photoelectrochemical, and surface stability studies of the porphyrins were performed for comparative purposes. The order of surface linkage stability on TiO2 in alkaline conditions, from most stable to least, was determined to be siloxane> phosphonate> carboxylate. Finally, porphyrin dimers fused via their meso and beta positions were synthesized using a chemical oxidative synthesis with a copper(II) oxidant. The molecules exhibit strong absorption in the visible and near-infrared spectral regions as well as interesting electrochemical properties suggesting possible applications in light harvesting and redox catalysis.

Synthesis of Ruthenium Complexes as Sensitizers for Dye-sensitized Solar Cells

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ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Synthesis of Ruthenium Complexes as Sensitizers for Dye-sensitized Solar Cells by : Supawiriya Saranarak

Download or read book Synthesis of Ruthenium Complexes as Sensitizers for Dye-sensitized Solar Cells written by Supawiriya Saranarak and published by . This book was released on 2011 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five ruthenium complexes, SS01-SS05, were synthesized. The physical and electronic properties were studied and the compounds were used as a critical part of a dye-sensitized solar cell. The complexes, which are dyes or photosensitizers, are used as mediator to convert light to electric power. In this study, one of the bipyridine ligand of the synthesized complexes was a derivative of 2,3-diphenylpyrazino[2,3-f][1,10]phenanthroline, which was to serve as the light-harvesting unit of the complexes. The SS01-SS05 bear different substituents at the para-position of the phenyl ring such as –H, –OMe, –NEt2, –Me, and –Br. The data obtained from 1H NMR and ATR-IR spectroscopy were used to identify the structure of the compounds. In studying electronic structure, cyclic voltammetry was used altogether with absorption spectra to calculate HOMO and LUMO electronic levels. Upon the study of photovoltaic characteristic of the cell staining with SS01-SS05, it was illustrated that the overall conversion efficiency of SS01-SS05 were 2.60, 3.04, 2.60, 2.50, and 1.06%, respectively, which were lower than the efficiency (5.07%) obtained from the cell staining with standard N719. These were the results from the lower current density of the cells staining with SS01-SS05, possibly due to poorer electron injection from SS01-SS05 onto the TiO2 surface, when compared to the standard N719.

Fabrication of dye-sensitized solar cells using natural dyes extracted from Brazilian plants

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Publisher : Marcelo Alatzatianou Rodrigues
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4./5 ( download)

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Book Synopsis Fabrication of dye-sensitized solar cells using natural dyes extracted from Brazilian plants by : Marcelo Alatzatianou Rodrigues

Download or read book Fabrication of dye-sensitized solar cells using natural dyes extracted from Brazilian plants written by Marcelo Alatzatianou Rodrigues and published by Marcelo Alatzatianou Rodrigues. This book was released on 2020-05-01 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dye-sensitized solar cell (DSSC) is one of the emerging thin-film photovoltaic technologies. Advantages come from the low cost and easier fabrication process. The realistic overall conversion efficiency already made the commercial availability a reality. It is possible the use of natural dyes extracted from plants in DSSC fabrication to substitute synthetic dyes, which requires complex fabrication processes and the use of toxic and scarce materials, like ruthenium. Natural dye-sensitized solar cells (NDSSC) are still in an early stage, with many research groups working hard to overcome efficiency and stability issues. Natural dyes are cheap, highly available, environmentally safe and easy to extract. Nature has so much to offer to humankind, each plant is unique, with characteristics developed during million of years of evolution. Each biome has an enormous number of species readily available for study. Among them, Brazilian forests are in an outstanding position, with a gigantic quantity of species with hidden opportunities. This work aims to inspire other researchers to explore this field and find in nature new answers for a clean energy demanding world. It is shown the basic aspects of NDSSC study and practical research, from laboratory construction to cells fabrication. After a brief introduction about PV technologies, DSSC is deeper discussed based on a literature review. Physical and electrochemical aspects are presented in details. Natural dyes specificities and application in DSSC are then discussed also based on other researchers findings. With a well-established theoretical basis, this work focus then on the development of a NDSSC fabrication protocol, presenting the most important tests and results achieved. A special highlight is given to the design and fabrication of a solar simulator from scratch. Having the infrastructure, equipments and protocol defined, the fabrication of NDSSC based on Brazilian plants was possible, including plants naturally originated in the country: blackberry, quaresmeira and embaúba-vermelha, and two other non-native species due to their economically important role, of which Brazil is currently the world leader producer, they are: arabica coffee and sugarcane. The found cells efficiencies for all studied plants dyes are in the range of other important research publications, even for the simplified and low cost proposed protocol, which validates the solutions and techniques used. Coffea arabica (arabica coffee) provided the best performance, reaching 0.44% overall conversion efficiency, with no special commonly used chemical treatment, co-adsorbent or purification, such as: TiCl4, organic acids, chromatography and lyophilization. It is hoped this work contribute for the development of an even greener energy generation from sunlight.

Springer Handbook of Inorganic Photochemistry

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Publisher : Springer Nature
ISBN 13 : 3030637131
Total Pages : 1914 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Springer Handbook of Inorganic Photochemistry by : Detlef Bahnemann

Download or read book Springer Handbook of Inorganic Photochemistry written by Detlef Bahnemann and published by Springer Nature. This book was released on 2022-06-25 with total page 1914 pages. Available in PDF, EPUB and Kindle. Book excerpt: The handbook comprehensively covers the field of inorganic photochemistry from the fundamentals to the main applications. The first section of the book describes the historical development of inorganic photochemistry, along with the fundamentals related to this multidisciplinary scientific field. The main experimental techniques employed in state-of-art studies are described in detail in the second section followed by a third section including theoretical investigations in the field. In the next three sections, the photophysical and photochemical properties of coordination compounds, supramolecular systems and inorganic semiconductors are summarized by experts on these materials. Finally, the application of photoactive inorganic compounds in key sectors of our society is highlighted. The sections cover applications in bioimaging and sensing, drug delivery and cancer therapy, solar energy conversion to electricity and fuels, organic synthesis, environmental remediation and optoelectronics among others. The chapters provide a concise overview of the main achievements in the recent years and highlight the challenges for future research. This handbook offers a unique compilation for practitioners of inorganic photochemistry in both industry and academia.