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Temperature Dependent Exciton Dynamics In Quantum Wells
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Book Synopsis Semiconductor Nanocrystal Quantum Dots by : Andrey Rogach
Download or read book Semiconductor Nanocrystal Quantum Dots written by Andrey Rogach and published by Springer Science & Business Media. This book was released on 2008-09-02 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to specifically focus on semiconductor nanocrystals, and address their synthesis and assembly, optical properties and spectroscopy, and potential areas of nanocrystal-based devices. The enormous potential of nanoscience to impact on industrial output is now clear. Over the next two decades, much of the science will transfer into new products and processes. One emerging area where this challenge will be very successfully met is the field of semiconductor nanocrystals. Also known as colloidal quantum dots, their unique properties have attracted much attention in the last twenty years.
Book Synopsis Exciton Dynamics in Lead Halide Perovskite Nanocrystals by : Bernhard Johann Bohn
Download or read book Exciton Dynamics in Lead Halide Perovskite Nanocrystals written by Bernhard Johann Bohn and published by Springer Nature. This book was released on 2021-05-18 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Less than a decade ago, lead halide perovskite semiconductors caused a sensation: Solar cells exhibiting astonishingly high levels of efficiency. Recently, it became possible to synthesize nanocrystals of this material as well. Interestingly; simply by controlling the size and shape of these crystals, new aspects of this material literally came to light. These nanocrystals have proven to be interesting candidates for light emission. In this thesis, the recombination, dephasing and diffusion of excitons in perovskite nanocrystals is investigated using time-resolved spectroscopy. All these dynamic processes have a direct impact on the light-emitting device performance from a technology point of view. However, most importantly, the insights gained from the measurements allowed the author to modify the nanocrystals such that they emitted with an unprecedented quantum yield in the blue spectral range, resulting in the successful implementation of this material as the active layer in an LED. This represents a technological breakthrough, because efficient perovskite light emitters in this wavelength range did not exist before.
Book Synopsis Exciton Transport Phenomena in GaAs Coupled Quantum Wells by : Jason Leonard
Download or read book Exciton Transport Phenomena in GaAs Coupled Quantum Wells written by Jason Leonard and published by Springer. This book was released on 2017-11-02 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents results crucial to the emerging field of indirect excitons. These specially designed quasiparticles give the unique opportunity to study fundamental properties of quantum degenerate Bose gases in semiconductors. Furthermore, indirect excitons allow for the creation of novel optoelectronic devices where excitons are used in place of electrons. Excitonic devices are explored for the development of advanced signal processing seamlessly coupled with optical communication. The thesis presents and describes the author's imaging experiments that led to the discovery of spin transport of excitons. The many firsts presented herein include the first studies of an excitonic conveyer, leading to the discovery of the dynamical localization-delocalization transition for excitons, and the first excitonic ramp and excitonic diode with no energy-dissipating voltage gradient.
Book Synopsis Introductory Quantum Optics by : Christopher Gerry
Download or read book Introductory Quantum Optics written by Christopher Gerry and published by Cambridge University Press. This book was released on 2005 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher Description
Book Synopsis Semiconductors And Rare Earth Based Materials: Lectures Given At The International Workshop On Materials Science by : F F Bekker
Download or read book Semiconductors And Rare Earth Based Materials: Lectures Given At The International Workshop On Materials Science written by F F Bekker and published by World Scientific. This book was released on 1991-09-30 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of proceedings covers 2 important branches of Materials Science: Semiconductor physics and solar cells, and rare earth based materials and their applications. In both sections introductory talks on the fundamental concepts are followed by up-to-date reports on the basic aspects of various applications (e.g. solar cells, supermagnets) all given by well-known specialists in their fields.
Book Synopsis Handbook of Solid-State Lighting and LEDs by : Zhe Chuan Feng
Download or read book Handbook of Solid-State Lighting and LEDs written by Zhe Chuan Feng and published by CRC Press. This book was released on 2017-06-12 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook addresses the development of energy-efficient, environmentally friendly solid-state light sources, in particular semiconductor light emitting diodes (LEDs) and other solid-state lighting devices. It reflects the vast growth of this field and impacts in diverse industries, from lighting to communications, biotechnology, imaging, and medicine. The chapters include coverage of nanoscale processing, fabrication of LEDs, light diodes, photodetectors and nanodevices, characterization techniques, application, and recent advances. Readers will obtain an understanding of the key properties of solid-state lighting and LED devices, an overview of current technologies, and appreciation for the challenges remaining. The handbook will be useful to material growers and evaluators, device design and processing engineers, newcomers, students, and professionals in the field.
Book Synopsis Spatially Indirect Excitons in Coupled Quantum Wells by : Chih-Wei Eddy Lai
Download or read book Spatially Indirect Excitons in Coupled Quantum Wells written by Chih-Wei Eddy Lai and published by . This book was released on 2004 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Confined Electrons and Photons by : Elias Burstein
Download or read book Confined Electrons and Photons written by Elias Burstein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: The optical properties of semiconductors have played an important role since the identification of semiconductors as "small" bandgap materials in the thinies, due both to their fundamental interest as a class of solids baving specific optical propenies and to their many important applications. On the former aspect we can cite the fundamental edge absorption and its assignment to direct or indirect transitions, many-body effects as revealed by exciton formation and photoconductivity. On the latter aspect, large-scale applications sucb as LEDs and lasers, photovoltaic converters, photodetectors, electro-optics and non-linear optic devices, come to mind. The eighties saw a revitalization of the whole field due to the advent of heterostructures of lower-dimensionality, mainly two-dimensional quantum wells, which through their enhanced photon-matter interaction yielded new devices with unsurpassed performance. Although many of the basic phenomena were evidenced through the seventies, it was this impact on applications which in turn led to such a massive investment in fabrication tools, thanks to which many new structures and materials were studied, yielding funher advances in fundamental physics.
Book Synopsis Excitonic and Vibrational Dynamics in Nanotechnology by : Svetlana Kilina
Download or read book Excitonic and Vibrational Dynamics in Nanotechnology written by Svetlana Kilina and published by CRC Press. This book was released on 2019-10-10 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book investigates QDs and SWCNTs using quantum-chemical calculations that describe intricate details of excited-state phenomena and provides information about the mechanisms that occur on the atomic level and that are extremely difficult, if not impossible, to probe experimentally. It delivers, consistently and coherently, a novel approach to nanomaterials which is promising for today's technologies as well as their future. This approach elegantly overcomes computational difficulties known in the field and shares ways to reach top performance in the description of combined quantum effects of molecular vibrations and exciton formation on realistic-size numerical models. The reader will acquire an understanding of the pioneering methodolo
Book Synopsis Physics Of Semiconductors, The - Proceedings Of The 22nd International Conference (In 3 Volumes) by : David J Lockwood
Download or read book Physics Of Semiconductors, The - Proceedings Of The 22nd International Conference (In 3 Volumes) written by David J Lockwood and published by World Scientific. This book was released on 1995-01-20 with total page 2858 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings review the progress in most aspects of semiconductor physics, including those related to materials, processing and devices. The conference continues the tradition of the ICPS series and these volumes include state-of-the-art lectures. The plenary and invited papers address areas of major interest.These volumes will serve as excellent material for researchers in semiconductor physics and related fields.
Book Synopsis Properties of III-V Quantum Wells and Superlattices by : P. K. Bhattacharya
Download or read book Properties of III-V Quantum Wells and Superlattices written by P. K. Bhattacharya and published by IET. This book was released on 1996 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: A finely-structured, state-of-the-art review on controlled building of atomic-scale mutilayers, where nanometric structures based on III-V semiconductors have attracted particular attention.
Book Synopsis Proceedings of the Third International Conference on Excitonic Processes in Condensed Matter, EXCON '98 by : Richard T. Williams
Download or read book Proceedings of the Third International Conference on Excitonic Processes in Condensed Matter, EXCON '98 written by Richard T. Williams and published by The Electrochemical Society. This book was released on 1998 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microcavities and Photonic Bandgaps: Physics and Applications by : J.G. Rarity
Download or read book Microcavities and Photonic Bandgaps: Physics and Applications written by J.G. Rarity and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The control of optical modes in microcavities or in photonic bandgap (PBG) materials is coming of age! Although these ideas could have been developed some time ago, it is only recently that they have emerged, due to advances in both atomic physics and in fabrication techniques, be it on the high-quality dielectric mirrors required for high-finesse Fabry Perot resonators or in semiconductor multilayer deposition methods. Initially the principles of quantum electro-dynamics (QED) were demonstrated in elegant atomic physics experiments. Now solid-state implementations are being investigated, with several subtle differences from the atomic case such as those due to their continuum of electronic states or the near Boson nature of their elementary excitations, the exciton. Research into quantum optics brings us ever newer concepts with potential to improve system performance such as photon squeezing, quantum cryptography, reversible taps, photonic de Broglie waves and quantum computers. The possibility of implementing these ideas with solid-state systems gives us hope that some could indeed find their way to the market, demonstrating the continuing importance of basic research for applications, be it in a somewhat more focused way than in earlier times for funding.
Book Synopsis Recent Topics and Innovations in Quantum Field Theory by : Zbigniew Piotr Szadkowski
Download or read book Recent Topics and Innovations in Quantum Field Theory written by Zbigniew Piotr Szadkowski and published by BoD – Books on Demand. This book was released on 2023-12-06 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the mid-19th century, the scientific community was convinced that physics had been fully discovered and only isolated, peripheral issues remained unexplained. One of these was black body radiation (CDC) and the transformation of electromagnetic waves. In 1893, Wien proved that the wavelength at which CDC radiates the greatest amount of energy is inversely proportional to body temperature. Surprisingly, the formula resulting from current, reliable physics describes CDC radiation very well only at low frequencies. For ultraviolet frequencies, the obtained function was constantly upwards. Planck proposed the distribution of the CDC radiation spectrum, assuming that the radiation can only be emitted in precisely defined portions known as quanta. This was the year of the creation of quantum physics, one of the foundations of modern physics. Aristotle recognized that there is a distinctive frame of reference. This view was challenged by Galileo, who concluded that the speed and position of the body are relative. The Galilean transformation became the foundation of Newtonian physics. However, Maxwell’s equations describing electromagnetic waves were not subject to the Galilean transformation but rather to the Lorentz transformation. The biggest problem at the beginning of the 20th century was the incompatibility of the laws of dynamics and electromagnetism. The theory of relativity is another foundation of modern physics. The last year of the 19th century debunked the myth of full understanding of the laws of nature. It quickly turned out that the knowledge about the universe at that time was very little. This lack of knowledge led to a rapid reconstruction of physics in the first half of the 20th century. is book discusses some of these subjects, including spinor fields, 5D relativity, dissipative quantum system and energy balance, centrifugal acceleration in relativistic astrophysics, and time-dependent photoluminescence.
Book Synopsis Optics of Excitons in Confined Systems, Proceedings of the INT Meeting, Italy, 24-27 September 1991 by : Andrea D'Andrea
Download or read book Optics of Excitons in Confined Systems, Proceedings of the INT Meeting, Italy, 24-27 September 1991 written by Andrea D'Andrea and published by CRC Press. This book was released on 1992-03-26 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optics of Excitons in Confined Systems provides an overview of research in semiconductors that exhibit resonance enhanced optical nonlinearities in the frequency range close to the valence-conduction band gap. The book is divided into the following sections: quantum wells, wires, and dots; superlattices; nonlinear optical properties of confined systems; and effects of external fields on confined systems. Topics range from fundamental theory to more applied aspects of excitons in confined sytems.
Book Synopsis Semiconductor Optics 2 by : Heinz Kalt
Download or read book Semiconductor Optics 2 written by Heinz Kalt and published by Springer Nature. This book was released on with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiconductors and Semimetals written by and published by Academic Press. This book was released on 1988-02-01 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductors and Semimetals
