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Growth And Optoelectronic Properties Of Zinc Sulfide Cadmium Sulfide Layers By Chemical Bath Deposition For Heterojunction Solar Cells
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Book Synopsis Growth and Optoelectronic Properties of Zinc Sulfide/cadmium Sulfide Layers by Chemical Bath Deposition for Heterojunction Solar Cells by : Ganesh Sainadh Gudavalli
Download or read book Growth and Optoelectronic Properties of Zinc Sulfide/cadmium Sulfide Layers by Chemical Bath Deposition for Heterojunction Solar Cells written by Ganesh Sainadh Gudavalli and published by . This book was released on 2015 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc Cadmium Sulphide and Zinc Sulphide as Alternative Heterojunction Partners for CIGS2 Solar Cells by : Bhaskar Kumar
Download or read book Zinc Cadmium Sulphide and Zinc Sulphide as Alternative Heterojunction Partners for CIGS2 Solar Cells written by Bhaskar Kumar and published by . This book was released on 2007 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present study chemical bath deposition parameters are near optimized for high efficiency CIGS2 Solar cells. Effect of various chemical bath deposition parameters on device performance was studied and attempts were made to optimize the deposition parameters in order to improve the device performance.In/(In+Ga) ratio in absorber layer is varied to obtain good lattice match and optimum band alignment. Solar cells with conversion efficiencies comparable to conventional CdS/CIGS2 has been obtained with Zn[subscript x]Cd[subscript 1-x]S/CIGS2. High short current as well as higher open circuit voltages were obtained with Zn[subscript x]Cd[subscript 1-x]S as alternative heterojunction partner for CIGS2 solar cells as compared to SLG/Mo/CIGS2/ CdS / i-ZnO/ZnO:Al.
Book Synopsis Elaboration, Characterization and Design of ZnS Thin Films for Optoelectronic Applications by : Abdelhak Jrad
Download or read book Elaboration, Characterization and Design of ZnS Thin Films for Optoelectronic Applications written by Abdelhak Jrad and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc sulfide is one of the first semiconductors discovered. It has great potential application thanks to its physicochemical properties. It is used extensively in optoelectronic, photocatalytic and gas detection applications. In particular, it is used for photovoltaic applications. In this work, the effect of doping by transition metals (manganese, cobalt and copper) on the structural, microstructural, morphological, optical, electrical and magnetic properties of zinc sulfide thin films prepared by chemical bath deposition (CBD) technique are studied by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, infrared spectroscopy, scanning electron microscopy, UV-VIS-NIR spectrophotometry, Hall effect and SQUID. The modeling and optimization of higher efficiency Cu(In,Ga)Se2 solar cells are also investigated in this thesis for various layers thickness by using Silvaco ATLAS.
Book Synopsis Cadmium Sulfide/copper Sulfide Heterojunction Cell Research by Sputter Deposition by : John A. Thornton
Download or read book Cadmium Sulfide/copper Sulfide Heterojunction Cell Research by Sputter Deposition written by John A. Thornton and published by . This book was released on 1980 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Bath Deposited Zinc Cadmium Sulfide and Sputter Deposted [sic] Zinc Oxide for Thin Film Solar Cell Device Fabrication by :
Download or read book Chemical Bath Deposited Zinc Cadmium Sulfide and Sputter Deposted [sic] Zinc Oxide for Thin Film Solar Cell Device Fabrication written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of thermal treatments on sputter deposited AZO and HAZO films are determined by way of rapid thermal annealing. High temperature annealing of ZnO is found to improve film characteristics. The gas ambient used in the thermal treatment process is found to be a critical parameter in post-anneal film quality. Gas ambients of nitrogen, argon, and forming gas, a nitrogen and hydrogen mixture, were employed in the thermal treatment studies. In general, optical transmission and resistivity improve for all films under each ambient, although films annealed in forming gas show the most improvement, with resulting figure of merit values two to three times their as deposited values.
Book Synopsis Inorganic Ternary Thin Films: Anaysis of Optical Properties by : Cliff Orori Mosiori
Download or read book Inorganic Ternary Thin Films: Anaysis of Optical Properties written by Cliff Orori Mosiori and published by Anchor Academic Publishing (aap_verlag). This book was released on 2015 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin films can be used to fabricate optoelectronic devices. Technology is currently focusing on ternary thin film composition because of their structure, inter-band transitions and other optical properties that can be maximized. This book discusses in detail the optical characteristics of ternary thin films and further investigates the behavior of Iron Zinc Sulphide, Lead Silver Sulphide, Copper Silver Sulphide, Copper Zinc Sulphide and Cadmium Zinc Sulphide. Thin films are of fundamental importance in modern technology.
Book Synopsis The Zinc Sulfide Buffer Layer Fabrication Using Chemical Bath Deposition Processes in Cu(In,Ga)Se2 Thin Film Solar Cells by :
Download or read book The Zinc Sulfide Buffer Layer Fabrication Using Chemical Bath Deposition Processes in Cu(In,Ga)Se2 Thin Film Solar Cells written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cadmium Sulfide/copper Sulfide Heterojunction Cell Research by : J. D. Meakin
Download or read book Cadmium Sulfide/copper Sulfide Heterojunction Cell Research written by J. D. Meakin and published by . This book was released on 1979 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc Oxide - A Material for Micro- and Optoelectronic Applications by : Norbert H. Nickel
Download or read book Zinc Oxide - A Material for Micro- and Optoelectronic Applications written by Norbert H. Nickel and published by Springer Science & Business Media. This book was released on 2005-12-28 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, a significant effort has been devoted to the investigation of ZnO as a suitable semiconductor for UV light-emitting diodes, lasers, and detectors and hetero-substrates for GaN. Research is driven not only by the technological requirements of state-of-the-art applications but also by the lack of a fundamental understanding of growth processes, the role of intrinsic defects and dopants, and the properties of hydrogen. The NATO Advanced Research Workshop on “Zinc oxide as a material for micro- and optoelectronic applications”, held from June 23 to June 25 2004 in St. Petersburg, Russia, was organized accordingly and started with the growth of ZnO. A variety of growth methods for bulk and layer growth were discussed. These techniques comprised growth methods such as closed space vapor transport (CSVT), metal-organic chemical vapor deposition, reactive ion sputtering, and pulsed laser deposition. From a structural point of view using these growth techniques ZnO can be fabricated ranging from single crystalline bulk material to polycrystalline ZnO and nanowhiskers. A major aspect of the ZnO growth is doping. n-type doping is relatively easy to accomplish with elements such al Al or Ga. At room temperature single crystal ZnO exhibits a resistivity of about 0. 3 -cm, an electron mobility of 2 17 -3 225 cm /Vs, and a carrier concentration of 10 cm . In n-type ZnO two shallow donors are observable with activation energies of 30 – 40 meV and 60 – 70 meV.
Download or read book Physics briefs written by and published by . This book was released on 1989 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Introduction of Zinc Sulfide Into the Window Layer of Cadmium Telluride Solar Cells by : Kathleen M. Dugan
Download or read book The Introduction of Zinc Sulfide Into the Window Layer of Cadmium Telluride Solar Cells written by Kathleen M. Dugan and published by . This book was released on 1995 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Bath Deposition of Group II-VI Semiconductor Thin Films for Solar Cells Applications by : Hani M. Khallaf
Download or read book Chemical Bath Deposition of Group II-VI Semiconductor Thin Films for Solar Cells Applications written by Hani M. Khallaf and published by . This book was released on 2009 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Post heat treatment in argon ambient helped reduce resistivity of CBD-ZnO undoped films to ~ 10−1[omega]-cm. In-situ doping of such films using Al shows promising results. Such films could be an alternative to indium tin oxide (ITO) layers that are commonly used as TCO layers for solar cells. Another approach is to use CBD to grow CdO and SnO2 thin films, with the goal of obtaining Cd2SnO4 by later annealing of these two layers. Cadmium stannate is another TCO candidate that could replace ITO in the near future. We have succeeded in growing CBD-CdO thin films using three different complexing agents. Undoped CBD-CdO films with a resistivity as low as 1.01 x10−2[omega]-cm and a carrier density as high as 2.59 x 1020 cm−3 have been obtained. SnO2 films have been successfully grown using CBD. Fabrication of Cadmium stannate thin films using CBD is investigated. In summary, our objective to expand the use of CBD beyond just growing CdS and ZnS, and to test the possibility of using it for in-situ doping of group II-VI semiconductors as well as TCO layers fabrication proved to be successful. We believe that this may have a significant impact on solar cells as well as other optoelectronic devices fabrication industry, due to the simplicity and the cost-effectiveness of CBD.
Book Synopsis Cadmium sulfide/copper sulfide heterojunction cell research by : Lockheed Palo Alto Research Laboratory
Download or read book Cadmium sulfide/copper sulfide heterojunction cell research written by Lockheed Palo Alto Research Laboratory and published by . This book was released on 1978 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Sanders, Brian Wayne Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780315762718 Total Pages :181 pages Book Rating :4.7/5 (627 download)
Book Synopsis Growth and Characterization of Electrodeposited Zinc Sulphide and Chemical Vapour Atomic Layer Deposited Zinc Oxide, Sulphide, and Oxysulphide Thin Films [microform] by : Sanders, Brian Wayne
Download or read book Growth and Characterization of Electrodeposited Zinc Sulphide and Chemical Vapour Atomic Layer Deposited Zinc Oxide, Sulphide, and Oxysulphide Thin Films [microform] written by Sanders, Brian Wayne and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1991 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Growth and Characterization of ZnO for the Front Contact of Cu(In, Ga)Se2 Solar Cells Using Reactive Sputtering Techniques by : Rita Bhatt
Download or read book Growth and Characterization of ZnO for the Front Contact of Cu(In, Ga)Se2 Solar Cells Using Reactive Sputtering Techniques written by Rita Bhatt and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: ZnO window layers for CIGS solar cells are grown with a DC sputtering technique instead of a conventional RF sputtering technique. Transparent window layers and buffer layers are sputtered from the Zn target in the presence of Oxygen. The window layer is doped with Aluminum in order to achieve high electrical conductivity and thermal stability. The effect of different sputtering parameters on the electrical and optical properties of the films is elaborately studied. Sets of annealing experiments are also performed. Combinations of different deposition parameters are examined to design the optimum fabrication conditions. We are able to deposit 85% transparent, Al doped ZnO films having 002-axis orientation and 4e-4 ohm-cm resistivity, which is successfully, used on CIGS solar cells. Resistivity of undoped ZnO buffer layers is varied form 10-2 ohm-cm to unmeasurable by varying the sputtering parameters. The performance of a reactively sputtered window layer and a buffer layer have matched the performance of the RF sputtered ZnO on CIGS solar cells. There has been considerable effort to eliminate Chemical Bath Deposition of the CdS buffer layer from CIS solar cell fabrication. The performance of an undoped DC sputtered ZnO layer is examined on Cd free CIGS solar cells. The ZnO buffer layer is directly sputtered on an underlying CIGS material. The performance of Cd free solar cells is highly susceptible to the presence of Oxygen in the sputtering ambient of the buffer layer deposition [6]. As Oxygen is a growth component in reactive sputtering, the growth mechanisms of the DC-sputtered buffer layer are studied to improve the understanding. The performance of all reactively sputtered ZnO devices matched the values reported in the literature and the results for DC sputtered ZnO on Cd-free solar cells were encouraging.
Book Synopsis Chemical Solution Deposition Of Semiconductor Films by : Gary Hodes
Download or read book Chemical Solution Deposition Of Semiconductor Films written by Gary Hodes and published by CRC Press. This book was released on 2002-10-08 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discussing specific depositions of a wide range of semiconductors and properties of the resulting films, Chemical Solution Deposition of Semiconductor Films examines the processes involved and explains the effect of various process parameters on final film and film deposition outcomes through the use of detailed examples. Supplying experimental res
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