Download or read book Color Quality of Semiconductor and Conventional Light Sources written by Tran Quoc Khanh and published by . This book was released on 2017 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meeting the need for a reliable publication on the topic and reflecting recent breakthroughs in the field, this is a comprehensive overview of color quality of solid-state light sources (LED-OLED and laser) and conventional lamps, providing academic researchers with an in-depth review of the current state while supporting lighting professionals in understanding, evaluating and optimizing illumination in their daily work.
Download or read book Color Quality of Semiconductor and Conventional Light Sources written by Tran Quoc Khanh and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Meeting the need for a reliable publication on the topic and reflecting recent breakthroughs in the field, this is a comprehensive overview of color quality of solid-state light sources (LED-OLED and laser) and conventional lamps, providing academic researchers with an in-depth review of the current state while supporting lighting professionals in understanding, evaluating and optimizing illumination in their daily work.
Download or read book Color Quality of Semiconductor and Conventional Light Sources written by Tran Quoc Khanh and published by John Wiley & Sons. This book was released on 2017-04-10 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meeting the need for a reliable publication on the topic and reflecting recent breakthroughs in the field, this is a comprehensive overview of color quality of solid-state light sources (LED-OLED and laser) and conventional lamps, providing academic researchers with an in-depth review of the current state while supporting lighting professionals in understanding, evaluating and optimizing illumination in their daily work.
Download or read book Advances in Information and Communication Technology and Systems written by Mykhailo Ilchenko and published by Springer Nature. This book was released on 2020-09-05 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the most important research areas in Information and Communication Technologies as well as Radio Electronics, in particular contains publications on theory, applications, and design methods of Processing and Control in Information and Communication Systems. The respective chapters share in-depth and extended results in these areas with a view to resolving practically relevant and challenging issues including: 1. Infocommunications: IT, Cloud and Big Data technologies, E-society, Internet of Things and its implementation, Information and communication systems, security, etc.; 2. Telecommunications: Communication systems and networks, theoretical foundations of information processing and transmission in communication systems, SDN and SDR, etc..; 3. Radio Engineering: Theory of circuits, signals and processes in radio engineering and electronics, Circuit engineering, antennas, Microwave technology, Microwave and THz electronics, etc.; 4. Electronics: Electronic materials, Electronic devices, Nanoelectronics and Nanotechnology, etc. These results can be used in the implementation of novel systems and to promote the exchange of information in e-societies. Given its scope the book offers a valuable resource for scientists, lecturers, specialists working at enterprises, graduate and undergraduate students who engage with problems in Information and Communication Technologies as well as Radio Electronics
Download or read book Human Centric Interior Lighting written by Tran Quoc Khanh and published by John Wiley & Sons. This book was released on 2023-10-16 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human Centric Integrative Lighting Detailed presentation of the technical and non-technical aspects of modern lighting and its effect on humans Human Centric Integrative Lighting provides a highly comprehensive overview of the subject, also referred to as human-centered indoor lighting technology; taking a practice-oriented approach, scientific findings in the field are condensed into models that can be directly used by developers. Written by leading scientists in the field of lighting technology, Human Centric Integrative Lighting includes detailed information on: Fundamentals of lighting technology as it interacts with human perception and the current state of interior lighting today Basic principles of human centric integrative lighting and its various aspects, such as visual performance, color quality, emotional impact, and correlation of relevant parameters Comprehensive lighting quality models and subsequently derived recommendations for the practical implementation of concepts Relevant research findings from journals, patent specifications, and standards to provide a unified outlook on the field Providing a comprehensive overview of the current state of development in the field, Human Centric Integrative Lighting discusses validated physiological and psychological perceptual models on which manufacturers of lighting products and suppliers of lighting technology solutions can base key design and development decisions. lighting products; lighting technology solutions; lighting design; lighting development; human-centered indoor lighting technology; lighting color quality; lighting principles; lighting emotional impact; lighting quality; lighting research
Download or read book Spectral near field data of LED systems for optical simulations written by Rotscholl, Ingo and published by KIT Scientific Publishing. This book was released on 2018-05-22 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Color Science and Photometry for Lighting with LEDs and Semiconductor Nanocrystals written by Talha Erdem and published by Springer. This book was released on 2019-01-18 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the application of semiconductor nanocrystals also known as colloidal quantum dots (QDs) to LED lighting for indoors and outdoors as well as LED backlighting in displays, summarizing the color science of QDs for lighting and displays and presenting recent developments in QD-integrated LEDs and display research. By employing QDs in color-conversion LEDs, it is possible to simultaneously accomplish successful color rendition of the illuminated objects and a good spectral overlap between the emission spectrum of the light source and the sensitivity of the human eye at a warm white color temperature – something that is fundamentally challenging to achieve with conventional sources, such as incandescent and fluorescent lamps, and phosphor-based LEDs.
Download or read book BeLight Vol 04 written by and published by TrendForce. This book was released on with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book III V Compound Semiconductors and Devices written by Keh Yung Cheng and published by Springer Nature. This book was released on 2020-11-08 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook gives a complete and fundamental introduction to the properties of III-V compound semiconductor devices, highlighting the theoretical and practical aspects of their device physics. Beginning with an introduction to the basics of semiconductor physics, it presents an overview of the physics and preparation of compound semiconductor materials, as well as a detailed look at the electrical and optical properties of compound semiconductor heterostructures. The book concludes with chapters dedicated to a number of heterostructure electronic and photonic devices, including the high-electron-mobility transistor, the heterojunction bipolar transistor, lasers, unipolar photonic devices, and integrated optoelectronic devices. Featuring chapter-end problems, suggested references for further reading, as well as clear, didactic schematics accompanied by six information-rich appendices, this textbook is ideal for graduate students in the areas of semiconductor physics or electrical engineering. In addition, up-to-date results from published research make this textbook especially well-suited as a self-study and reference guide for engineers and researchers in related industries.
Download or read book LED Lighting written by T. Q. Khan and published by John Wiley & Sons. This book was released on 2015-02-09 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Promoting the design, application and evaluation of visually and electrically effective LED light sources and luminaires for general indoor lighting as well as outdoor and vehicle lighting, this book combines the knowledge of LED lighting technology with human perceptual aspects for lighting scientists and engineers. After an introduction to the human visual system and current radiometry, photometry and color science, the basics of LED chip and phosphor technology are described followed by specific issues of LED radiometry and the optical, thermal and electric modeling of LEDs. This is supplemented by the relevant practical issues of pulsed LEDs, remote phosphor LEDs and the aging of LED light sources. Relevant human visual aspects closely related to LED technology are described in detail for the photopic and the mesopic range of vision, including color rendering, binning, whiteness, Circadian issues, as well as flicker perception, brightness, visual performance, conspicuity and disability glare. The topic of LED luminaires is discussed in a separate chapter, including retrofit LED lamps, LED-based road and street luminaires and LED luminaires for museum and school lighting. Specific sections are devoted to the modularity of LED luminaires, their aging and the planning and evaluation methods of new LED installations. The whole is rounded off by a summary and a look towards future developments.
Download or read book Mechanical and Electrical Equipment for Buildings written by Walter T. Grondzik and published by John Wiley & Sons. This book was released on 2019-09-10 with total page 1920 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive guide to the design of environmental control systems for buildings—now updated in its 13th Edition Mechanical and Electrical Equipment for Buildings is the most widely used text on the design of environmental control systems for buildings—helping students of architecture, architectural engineering, and construction understand what they need to know about building systems and controlling a building's environment. With over 2,200 drawings and photographs, this 13th Edition covers basic theory, preliminary building design guidelines, and detailed design procedure for buildings of all sizes. It also provides information on the latest technologies, emerging design trends, and updated codes. Presented in nine parts, Mechanical and Electrical Equipment for Buildings, Thirteenth Edition offers readers comprehensive coverage of: environmental resources; air quality; thermal, visual, and acoustic comfort; passive heating and cooling; water design and supply; daylighting and electric lighting; liquid and solid waste; and building noise control. This book also presents the latest information on fire protection, electrical systems; and elevator and escalator systems. This Thirteenth Edition features: Over 2,200 illustrations, with 200 new photographs and illustrations All-new coverage of high-performance building design Thoroughly revised references to codes and standards: ASHRAE, IES, USGBC (LEED), Living Building Challenge, WELL Building Standard, and more Updated offering of best-in-class ancillary materials for students and instructors available via the book’s companion website Architect Registration Examination® (ARE®) style study questions available in the instructor’s manual and student guide Mechanical and Electrical Equipment for Buildings, has been the industry standard reference that comprehensively covers all aspects of building systems for over 80 years. This Thirteenth Edition has evolved to reflect the ever-growing complexities of building design, and has maintained its relevance by allowing for the conversation to include ”why” as well as “how to.”
Download or read book Modern Clinic Design written by Christine Guzzo Vickery and published by John Wiley & Sons. This book was released on 2015-04-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shift Clinic design to keep pace with the evolving healthcare industry Modern Clinic Design: Strategies for an Era of Change is a comprehensive guide to optimizing patient experience through the design of the built environment. Written by a team of veteran healthcare interior designers, architects, and engineers, this book addresses the impacts of evolving legislation, changing technologies, and emerging nontraditional clinic models on clinic design, and illustrates effective design strategies for any type of clinic. Readers will find innovative ideas about lean design, design for flexibility, and the use of mock-ups to prototype space plans within a clinic setting, and diagrammed examples including waiting rooms, registration desks, and exam rooms that demonstrate how these ideas are applied to real-world projects. Spurred on by recent healthcare legislation and new technological developments, clinics can now offer a greater variety of services in a greater variety of locations. Designers not only need to know the different requirements for each of these spaces, but also understand how certain design strategies affect the patient's experience in the space. This book explores all aspects of clinic design, and describes how aesthetics and functionality can merge to provide a positive experience for patients, staff, and healthcare providers. Understand how recent industry developments impact facility design Learn how design strategies can help create a positive patient experience Examine emerging clinic models that are becoming increasingly prevalent Analyze the impact of technology on clinic design A well-designed clinic is essential for the well-being of the patients and health care providers that occupy the space every day. The healthcare industry is shifting, and the healthcare design industry must shift with it to continue producing spaces that are relevant to ever-evolving patient and worker needs. For complete guidance toward the role of design, Modern Clinic Design is a thorough, practical reference.
Download or read book Solid State Lighting Reliability written by W.D. van Driel and published by Springer Science & Business Media. This book was released on 2012-09-06 with total page 619 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid State Lighting Reliability: Components to Systems begins with an explanation of the major benefits of solid state lighting (SSL) when compared to conventional lighting systems including but not limited to long useful lifetimes of 50,000 (or more) hours and high efficacy. When designing effective devices that take advantage of SSL capabilities the reliability of internal components (optics, drive electronics, controls, thermal design) take on critical importance. As such a detailed discussion of reliability from performance at the device level to sub components is included as well as the integrated systems of SSL modules, lamps and luminaires including various failure modes, reliability testing and reliability performance. A follow-up, Solid State Lighting Reliability Part 2, was published in 2017.
Download or read book Nano Structures for Optics and Photonics written by Baldassare Di Bartolo and published by Springer. This book was released on 2014-10-06 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions in this volume were presented at a NATO Advanced Study Institute held in Erice, Italy, 4-19 July 2013. Many aspects of important research into nanophotonics, plasmonics, semiconductor materials and devices, instrumentation for bio sensing to name just a few, are covered in depth in this volume. The growing connection between optics and electronics, due to the increasing important role plaid by semiconductor materials and devices, find their expression in the term photonics, which also reflects the importance of the photon aspect of light in the description of the performance of several optical systems. Nano-structures have unique capabilities that allow the enhanced performance of processes of interest in optical and photonic devices. In particular these structures permit the nanoscale manipulation of photons, electrons and atoms; they represent a very hot topic of research and are relevant to many devices and applications. The various subjects bridge over the disciplines of physics, biology and chemistry, making this volume of interest to people working in these fields. The emphasis is on the principles behind each technique and on examining the full potential of each technique.
Download or read book Springer Handbook of Medical Technology written by Rüdiger Kramme and published by Springer Science & Business Media. This book was released on 2011-10-02 with total page 1497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise, user-oriented and up-to-date desk reference offers a broad introduction to the fascinating world of medical technology, fully considering today’s progress and further development in all relevant fields. The Springer Handbook of Medical Technology is a systemized and well-structured guideline which distinguishes itself through simplification and condensation of complex facts. This book is an indispensable resource for professionals working directly or indirectly with medical systems and appliances every day. It is also meant for graduate and post graduate students in hospital management, medical engineering, and medical physics.
Download or read book Nitride Semiconductor Light Emitting Diodes LEDs written by Jian-Jang Huang and published by Woodhead Publishing. This book was released on 2014-02-14 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of nitride-based light-emitting diodes (LEDs) has led to advancements in high-brightness LED technology for solid-state lighting, handheld electronics, and advanced bioengineering applications. Nitride Semiconductor Light-Emitting Diodes (LEDs) reviews the fabrication, performance, and applications of this technology that encompass the state-of-the-art material and device development, and practical nitride-based LED design considerations. Part one reviews the fabrication of nitride semiconductor LEDs. Chapters cover molecular beam epitaxy (MBE) growth of nitride semiconductors, modern metalorganic chemical vapor deposition (MOCVD) techniques and the growth of nitride-based materials, and gallium nitride (GaN)-on-sapphire and GaN-on-silicon technologies for LEDs. Nanostructured, non-polar and semi-polar nitride-based LEDs, as well as phosphor-coated nitride LEDs, are also discussed. Part two covers the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots. Further chapters discuss the development of LED encapsulation technology and the fundamental efficiency droop issues in gallium indium nitride (GaInN) LEDs. Finally, part three highlights applications of nitride LEDs, including liquid crystal display (LCD) backlighting, infrared emitters, and automotive lighting. Nitride Semiconductor Light-Emitting Diodes (LEDs) is a technical resource for academics, physicists, materials scientists, electrical engineers, and those working in the lighting, consumer electronics, automotive, aviation, and communications sectors. Reviews fabrication, performance, and applications of this technology that encompass the state-of-the-art material and device development, and practical nitride-based LED design considerations Covers the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots Highlights applications of nitride LEDs, including liquid crystal display (LCD) backlighting, infra-red emitters, and automotive lighting
Download or read book Color Tuning for Perovskite Light Emitting Diodes written by Hongling Yu and published by Linköping University Electronic Press. This book was released on 2020-11-11 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal halide perovskites (MHPs) are recognized as promising semiconductor materials for a variety of optical and electrical device applications due to their cost-effective and outstanding optoelectronic properties. As one of the most significant applications, perovskite light-emitting diodes (PeLEDs) hold promise for future lighting and display technologies, attributed to their high photoluminescence quantum yield (PLQY), high color purity, and tunable emission color. The emission colors of PeLEDs can be tuned by mixing the halide anions, adjusting the size of perovskite nanocrystals, or changing the dimensionality of perovskites. However, in practice, all these different approaches have their own advantages and challenges. This thesis centres around the color tunability of perovskites, aiming to develop PeLEDs with different colors using different approaches. We first demonstrate red and near-infrared PeLEDs using a straightforward approach – in situ solution-processed perovskite quantum dots (PQDs). PQDs prepared from colloidal approaches are widely reported and used in LEDs. In contrast, PQDs prepared from the in situ approaches are hardly reported, although they have advantages for device applications. By employing aromatic ammonium iodide (1-naphthylmethyl ammonium iodide, NMAI) as an agent into perovskite precursor solutions, together with annealing temperature modulation, we obtain in situ grown PQDs delivering high external quantum efficiencies (EQEs) of up to 11.0% with tunable electroluminescence (EL) spectra (667 - 790 nm). Our in situ generated PQDs based on pure-halogen perovskites can be easily obtained through a simple deposition process and free of phase segregation, making them a more promising approach for tuning the emission colors of perovskite LEDs. We then move to blue PeLEDs using cesium-based mixed-Br/Cl perovskites. Although mixed halides are a straightforward strategy to tune the emission color, PeLEDs based on this approach suffer from poor color stability, which is attributed to surface defects at grain boundaries. Under the condition of optical excitations, light density over a certain value (a threshold), oxygen, and surface defects at perovskite grain boundaries are found to be key factors inducing photoluminescence (PL) spectral instability of CsPb(Br1?xClx)3 perovskites. Upon electrical bias, defects at grain boundaries provide undesirable halide migration channels, responsible for EL spectral instability issues. Through effective defect passivation, the PL spectral resistance to oxygen is enhanced; moreover, high-performance and color-stable blue PeLEDs are achieved, delivering a maximum luminance of 5351 cd m–2 and a peak EQE of 4.55% with a peak emission wavelength at 489 nm. These findings provide new insights into the color instability issue of mixed halide blue perovskites, against which we also demonstrate an effective strategy. We finally realize single-emissive-layer (EML) white PeLEDs by employing a mixed halide perovskite film as the EML. In spite of high-performance monochromatic blue, green, and red colors, the development of white PeLEDs, especially for single-EML ones, remains a very big challenge. By effective modulation of the halide salt precursors, we achieve single-EML white PeLEDs with Commission Internationale de L’Eclairage (CIE) coordinates of (0.33, 0.33), close to those (0.3128, 0.3290) of the CIE standard illuminant D65. This work not only provides a successful demonstration of a single-EML white PeLED, but also provides useful guidelines for the future development of highperformance single-EML white PeLEDs.
