AlN base layers for UV LEDs

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Publisher : Cuvillier Verlag
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Language : EN, FR, GB
ISBN 10 : 9783736964518
Pages : 156 pages
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Rating : 4.7/5 (369 users download)


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Summary Book Review AlN base layers for UV LEDs :

Download or read book AlN base layers for UV LEDs written by Sebastian Walde and published by Cuvillier Verlag. This book was released on 2021-06-22 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: To enable the fabrication of high performance ultraviolet (UV) light-emitting diodes (LEDs) this work aims at improving the quality of AlN base layers on sapphire substrates. The main issues for UV LEDs are still a limited internal quantum efficiency due to a high amount of threading dislocations along with a limited light extraction efficiency due to total internal reflection at the AlN/sapphire interface. Therefore, high-temperature annealing of AlN/sapphire layers and growth on nanopatterned sapphire substrates were comprehensively investigated. High-temperature annealing was applied to AlN layers of different strain and thickness grown by metalorganic vapour phase epitaxy (MOVPE). The threading dislocation density could be successfully reduced by more than one order of magnitude down to 6 × 108 cm-2. Wave optical simulations of UV LEDs on nanopatterned sapphire substrates (NPSS) were conducted and showed a potential increase in light extraction efficiency compared to a planar substrate. The optimized MOVPE growth process on sapphire nanopillars and sapphire nanoholes resulted in a fully coalesced and atomically smooth AlN surface. The threading dislocation density was reduced to 1 ×109 cm-2 for AlN on both nanopillars and nanoholes. UVC LEDs emitting at 265 nm wavelength were grown on top of the developed templates. Increased internal efficiency was obtained by reduced dislocation density and more efficient light extraction was achieved on NPSS in case of a transparent heterostructure and reflective contacts. Thus, the developed templates yield considerable improvement in light output compared to conventional templates.

III-Nitride Ultraviolet Emitters

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Publisher : Springer
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Language : EN, FR, GB
ISBN 10 : 9783319241005
Pages : 442 pages
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Rating : 4.3/5 (192 users download)


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Summary Book Review III-Nitride Ultraviolet Emitters :

Download or read book III-Nitride Ultraviolet Emitters written by Michael Kneissl and published by Springer. This book was released on 2015-11-12 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the state-of-the-art in group III-nitride based ultraviolet LED and laser technologies, covering different substrate approaches, a review of optical, electronic and structural properties of InAlGaN materials as well as various optoelectronic components. In addition, the book gives an overview of a number of key application areas for UV emitters and detectors, including water purification, phototherapy, sensing, and UV curing. The book is written for researchers and graduate level students in the area of semiconductor materials, optoelectronics and devices as well as developers and engineers in the various application fields of UV emitters and detectors.

Handbook of Solid-State Lighting and LEDs

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Publisher : CRC Press
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Language : EN, FR, GB
ISBN 10 : 9781498741422
Pages : 704 pages
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Rating : 4.4/5 (987 users download)


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Summary Book Review Handbook of Solid-State Lighting and LEDs :

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 704 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.

Optics of Semiconductors and Their Nanostructures

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Publisher : Springer Science & Business Media
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Language : EN, FR, GB
ISBN 10 : 9783662091159
Pages : 348 pages
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Rating : 4.6/5 (62 users download)


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Summary Book Review Optics of Semiconductors and Their Nanostructures :

Download or read book Optics of Semiconductors and Their Nanostructures written by Heinz Kalt and published by Springer Science & Business Media. This book was released on 2013-04-09 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the field of semiconductor optics has been pushed to several extremes. The size of semiconductor structures has shrunk to dimensions of a few nanometers, the semiconductor-light interaction is studied on timescales as fast as a few femtoseconds, and transport properties on a length scale far below the wavelength of light have been revealed. These advances were driven by rapid improvements in both semiconductor and optical technologies and were further facilitated by progress in the theoretical description of optical excitations in semiconductors. This book, written by leading experts in the field, provides an up-to-date introduction to the optics of semiconductors and their nanostructures so as to help the reader understand these exciting new developments. It also discusses recently established applications, such as blue-light emitters, as well as the quest for future applications in areas such as spintronics, quantum information processing, and third-generation solar cells.

Ultrawide Bandgap Semiconductors

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Publisher : Academic Press
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ISBN 10 : 9780128228715
Pages : 480 pages
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Rating : 4.1/5 (282 users download)


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Summary Book Review Ultrawide Bandgap Semiconductors :

Download or read book Ultrawide Bandgap Semiconductors written by and published by Academic Press. This book was released on 2021-07-26 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrawide Bandgap Semiconductors, Volume 107 in the Semiconductors and Semimetals series, highlights the latest breakthrough in fundamental science and technology development of ultrawide bandgap (UWBG) semiconductor materials and devices based on gallium oxide, aluminium nitride, boron nitride, and diamond. It includes important topics on the materials growth, characterization, and device applications of UWBG materials, where electronic, photonic, thermal and quantum properties are all thoroughly explored. Contains the latest breakthrough in fundamental science and technology development of ultrawide bandgap (UWBG) semiconductor materials and devices Provides a comprehensive presentation that covers the fundamentals of materials growth and characterization, as well as design and performance characterization of state-of-the-art UWBG materials, structures, and devices Presents an in-depth discussion on electronic, photonic, thermal, and quantum technologies based on UWBG materials

Light-Emitting Diodes

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Publisher : Springer
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Language : EN, FR, GB
ISBN 10 : 9783319992112
Pages : 600 pages
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Rating : 4.3/5 (199 users download)


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Summary Book Review Light-Emitting Diodes :

Download or read book Light-Emitting Diodes written by Jinmin Li and published by Springer. This book was released on 2019-01-07 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive in scope, this book covers the latest progresses of theories, technologies and applications of LEDs based on III-V semiconductor materials, such as basic material physics, key device issues (homoepitaxy and heteroepitaxy of the materials on different substrates, quantum efficiency and novel structures, and more), packaging, and system integration. The authors describe the latest developments of LEDs with spectra coverage from ultra-violet (UV) to the entire visible light wavelength. The major aspects of LEDs, such as material growth, chip structure, packaging, and reliability are covered, as well as emerging and novel applications beyond the general and conventional lightings. This book, written by leading authorities in the field, is indispensable reading for researchers and students working with semiconductors, optoelectronics, and optics. Addresses novel LED applications such as LEDs for healthcare and wellbeing, horticulture, and animal breeding; Editor and chapter authors are global leading experts from the scientific and industry communities, and their latest research findings and achievements are included; Foreword by Hiroshi Amano, one of the 2014 winners of the Nobel Prize in Physics for his work on light-emitting diodes.

Optoelectronic Devices: III Nitrides

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Publisher : Elsevier
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Language : EN, FR, GB
ISBN 10 : 9780080538112
Pages : 592 pages
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Rating : 4.0/5 (85 users download)


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Summary Book Review Optoelectronic Devices: III Nitrides :

Download or read book Optoelectronic Devices: III Nitrides written by Mohamed Henini and published by Elsevier. This book was released on 2004-12-17 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tremendous progress has been made in the last few years in the growth, doping and processing technologies of the wide bandgap semiconductors. As a result, this class of materials now holds significant promis for semiconductor electronics in a broad range of applications. The principal driver for the current revival of interest in III-V Nitrides is their potential use in high power, high temperature, high frequency and optical devices resistant to radiation damage. This book provides a wide number of optoelectronic applications of III-V nitrides and covers the entire process from growth to devices and applications making it essential reading for those working in the semiconductors or microelectronics. Broad review of optoelectronic applications of III-V nitrides

Modern Aspects of Bulk Crystal and Thin Film Preparation

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Publisher : BoD – Books on Demand
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Language : EN, FR, GB
ISBN 10 : 9789533076102
Pages : 620 pages
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Rating : 4.5/5 (33 users download)


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Summary Book Review Modern Aspects of Bulk Crystal and Thin Film Preparation :

Download or read book Modern Aspects of Bulk Crystal and Thin Film Preparation written by Nikolai Kolesnikov and published by BoD – Books on Demand. This book was released on 2012-01-13 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: In modern research and development, materials manufacturing crystal growth is known as a way to solve a wide range of technological tasks in the fabrication of materials with preset properties. This book allows a reader to gain insight into selected aspects of the field, including growth of bulk inorganic crystals, preparation of thin films, low-dimensional structures, crystallization of proteins, and other organic compounds.

Materials for Energy

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Publisher : CRC Press
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ISBN 10 : 9781000176711
Pages : 514 pages
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Rating : 4.0/5 (1 users download)


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Summary Book Review Materials for Energy :

Download or read book Materials for Energy written by Sam Zhang and published by CRC Press. This book was released on 2020-10-06 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials for Energy offers a comprehensive overview of the latest developments in materials for efficient and sustainable energy applications, including energy conversion, storage, and smart applications. Discusses a wide range of material types, such as nanomaterials, carbonaceous electrocatalysts and electrolytes, thin films, phase change materials, 2D energy materials, triboelectric materials, and membrane materials Describes applications that include flexible energy storage devices, sensors, energy storage batteries, fuel and solar cells, photocatalytic wastewater treatment, and more Highlights current developments in energy conversion, storage, and applications from a materials angle Aimed at researchers, engineers, and technologists working to solve alternative energy issues, this work illustrates the state of the art and latest technologies in this important field.

Integrated Microsystems

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Publisher : CRC Press
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Language : EN, FR, GB
ISBN 10 : 9781439836217
Pages : 760 pages
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Rating : 4.4/5 (398 users download)


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Summary Book Review Integrated Microsystems :

Download or read book Integrated Microsystems written by Krzysztof Iniewski and published by CRC Press. This book was released on 2017-12-19 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: As rapid technological developments occur in electronics, photonics, mechanics, chemistry, and biology, the demand for portable, lightweight integrated microsystems is relentless. These devices are getting exponentially smaller, increasingly used in everything from video games, hearing aids, and pacemakers to more intricate biomedical engineering and military applications. Edited by Kris Iniewski, a revolutionary in the field of advanced semiconductor materials, Integrated Microsystems: Electronics, Photonics, and Biotechnology focuses on techniques for optimized design and fabrication of these intelligent miniaturized devices and systems. Composed of contributions from experts in academia and industry around the world, this reference covers processes compatible with CMOS integrated circuits, which combine computation, communications, sensing, and actuation capabilities. Light on math and physics, with a greater emphasis on microsystem design and configuration and electrical engineering, this book is organized in three sections—Microelectronics and Biosystems, Photonics and Imaging, and Biotechnology and MEMs. It addresses key topics, including physical and chemical sensing, imaging, smart actuation, and data fusion and management. Using tables, figures, and equations to help illustrate concepts, contributors examine and explain the potential of emerging applications for areas including biology, nanotechnology, micro-electromechanical systems (MEMS), microfluidics, and photonics.

UV Solid-State Light Emitters and Detectors

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Publisher : Springer Science & Business Media
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Language : EN, FR, GB
ISBN 10 : 9781402021039
Pages : 308 pages
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Rating : 4.4/5 (2 users download)


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Summary Book Review UV Solid-State Light Emitters and Detectors :

Download or read book UV Solid-State Light Emitters and Detectors written by Michael S. Shur and published by Springer Science & Business Media. This book was released on 2004-05-31 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared and visible light LEDs and photodetectors have found numerous applications and have become a truly enabling technology. The promise of solid state lighting has invigorated interest in white light LEDs. Ultraviolet LEDs and solar blind photodetectors represent the next frontier in solid state emitters and hold promise for many important applications in biology, medi cine, dentistry, solid state lighting, displays, dense data storage, and semi conductor manufacturing. One of the most important applications is in sys tems for the identification of hazardous biological agents. Compared to UV lamps, UV LEDs have lower power consumption, a longer life, compactness, and sharper spectral lines. UV LEDs can provide a variety of UV spectra and have shape and form factor flexibility and rugged ness. Using conventional phosphors, UV LEDs can generate white light with high CRI and high efficiency. If quantum cutter phosphors are developed, white light generation by UV LEDs might become even more efficient. Advances in semiconductor materials and in improved light extraction techniques led to the development of a new generation of efficient and pow erful visible high-brightness LEDs and we expect that similar improvements will be achieved in solid-state UV technology.

III-Nitride Semiconductor Optoelectronics

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Publisher : Academic Press
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Language : EN, FR, GB
ISBN 10 : 9780128097236
Pages : 492 pages
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Rating : 4.1/5 (28 users download)


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Summary Book Review III-Nitride Semiconductor Optoelectronics :

Download or read book III-Nitride Semiconductor Optoelectronics written by and published by Academic Press. This book was released on 2017-01-05 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: III-Nitride Semiconductor Optoelectronics covers the latest breakthrough research and exciting developments in the field of III-nitride compound semiconductors. It includes important topics on the fundamentals of materials growth, characterization, and optoelectronic device applications of III-nitrides. Bulk, quantum well, quantum dot, and nanowire heterostructures are all thoroughly explored. Contains the latest breakthrough research in III-nitride optoelectronics Provides a comprehensive presentation that covers the fundamentals of materials growth and characterization and the design and performance characterization of state-of-the-art optoelectronic devices Presents an in-depth discussion on III-nitride bulk, quantum well, quantum dot, and nanowire technologies

III-Nitrides Light Emitting Diodes: Technology and Applications

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Publisher : Springer Nature
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ISBN 10 : 9789811579493
Pages : 285 pages
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Rating : 4.8/5 (115 users download)


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Summary Book Review III-Nitrides Light Emitting Diodes: Technology and Applications :

Download or read book III-Nitrides Light Emitting Diodes: Technology and Applications written by Jinmin Li and published by Springer Nature. This book was released on 2020-08-31 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides an overview of III-nitride-material-based light-emitting diode (LED) technology, from the basic material physics to the latest advances in the field, such as homoepitaxy and heteroepitaxy of the materials on different substrates. It also includes the latest advances in the field, such as approaches to improve quantum efficiency and reliability as well as novel structured LEDs. It explores the concept of material growth, chip structure, packaging, reliability and application of LEDs. With spectra coverage from ultraviolet (UV) to entire visible light wavelength, the III-nitride-material-based LEDs have a broad application potential, and are not just limited to illumination. These novel applications, such as health & medical, visible light communications, fishery and horticulture, are also discussed in the book.

Nitride Semiconductor Technology

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Publisher : John Wiley & Sons
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ISBN 10 : 9783527825257
Pages : 464 pages
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Rating : 4.5/5 (278 users download)


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Summary Book Review Nitride Semiconductor Technology :

Download or read book Nitride Semiconductor Technology written by Fabrizio Roccaforte and published by John Wiley & Sons. This book was released on 2020-07-17 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book "Nitride Semiconductor Technology" provides an overview of nitride semiconductors and their uses in optoelectronics and power electronics devices. It explains the physical properties of those materials as well as their growth methods. Their applications in high electron mobility transistors, vertical power devices, LEDs, laser diodes, and vertical-cavity surface-emitting lasers are discussed in detail. The book further examines reliability issues in these materials and puts forward perspectives of integrating them with 2D materials for novel high-frequency and high-power devices. In summary, it covers nitride semiconductor technology from materials to devices and provides the basis for further research.

Wide Bandgap Semiconductor Based Micro/Nano Devices

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Publisher : MDPI
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ISBN 10 : 9783038978428
Pages : 138 pages
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Rating : 4.0/5 (389 users download)


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Summary Book Review Wide Bandgap Semiconductor Based Micro/Nano Devices :

Download or read book Wide Bandgap Semiconductor Based Micro/Nano Devices written by Jung-Hun Seo and published by MDPI. This book was released on 2019-04-25 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: While group IV or III-V based device technologies have reached their technical limitations (e.g., limited detection wavelength range or low power handling capability), wide bandgap (WBG) semiconductors which have band-gaps greater than 3 eV have gained significant attention in recent years as a key semiconductor material in high-performance optoelectronic and electronic devices. These WBG semiconductors have two definitive advantages for optoelectronic and electronic applications due to their large bandgap energy. WBG energy is suitable to absorb or emit ultraviolet (UV) light in optoelectronic devices. It also provides a higher electric breakdown field, which allows electronic devices to possess higher breakdown voltages. This Special Issue seeks research papers, short communications, and review articles that focus on novel synthesis, processing, designs, fabrication, and modeling of various WBG semiconductor power electronics and optoelectronic devices.

Wide Bandgap Semiconductors

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Publisher : Springer Science & Business Media
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Language : EN, FR, GB
ISBN 10 : 9783540472353
Pages : 460 pages
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Rating : 4.5/5 (44 users download)


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Summary Book Review Wide Bandgap Semiconductors :

Download or read book Wide Bandgap Semiconductors written by Kiyoshi Takahashi and published by Springer Science & Business Media. This book was released on 2007-04-12 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the development, current state, and future prospects of wide bandgap semiconductor materials and related optoelectronics devices. With 901 references, 333 figures and 21 tables, this book will serve as a one-stop source of knowledge on wide bandgap semiconductors and related optoelectronics devices.

Wide Bandgap Light Emitting Materials And Devices

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Publisher : John Wiley & Sons
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Language : EN, FR, GB
ISBN 10 : 9783527617081
Pages : 228 pages
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Rating : 4.5/5 (276 users download)


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Summary Book Review Wide Bandgap Light Emitting Materials And Devices :

Download or read book Wide Bandgap Light Emitting Materials And Devices written by Gertrude F. Neumark and published by John Wiley & Sons. This book was released on 2008-01-08 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wide bandgap light emitters include laser diodes and light-emitting diodes (LED), the most modern diodes widely used in current technologies as microelectronics and optoelectronics. Rapid advances have been made during the last few years, with the result that more research is devoted to applications in line with the expanding market for optoelectronics. This volume deals with recent research results on wide bandgap light emitting materials, introducing new concepts for devices based on these materials. The editors, scientists with the best reputations, have invited authors from different institutions who are acknowledged researchers in the field as well as being involved in industrial applications. They represent several lines of research: III-nitride compounds, ZnO and ZnSe, the most promising materials for device applications.