Light-Emitting DiodesRevised and fully updated, the second edition of this graduate textbook offers a comprehensive explanation of the technology and physics of LEDs such as infrared, visible-spectrum, ultraviolet, and white LEDs made from III-V semiconductors. Elementary properties such as electrical and optical characteristics are reviewed, followed by the analysis of advanced device structures. With nine additional chapters, the treatment of LEDs has been vastly expanded, including new material on device packaging, reflectors, UV LEDs, III-V nitride materials, solid-state sources for illumination applications, and junction temperature. Radiative and non-radiative recombination dynamics, methods for improving light extraction, high-efficiency and high-power device designs, white-light emitters with wavelength-converting phosphor materials, optical reflectors, and spontaneous recombination in resonant-cavity structures are discussed in detail. With exercises, solutions, and illustrative examples, this textbook will be of interest to scientists and engineers working on LEDs and graduate students in electrical engineering, applied physics, and materials science. |
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Contents
| 1 | |
Radiative and nonradiative recombination | 27 |
Theory of radiative recombination | 48 |
Electrical properties | 59 |
Optical properties | 86 |
Packaging | 191 |
Visiblespectrum LEDs | 201 |
The AlGaInN material system and ultraviolet emitters | 222 |
Spontaneous emission from resonant cavities | 239 |
Resonantcavity lightemitting diodes | 255 |
Human eye sensitivity and photometric qualities | 275 |
Optical communication | 367 |
Communication LEDs | 382 |
| 415 | |
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Common terms and phrases
absorption active region AlGaInP angle Appl applications approximately assumed band bandgap blue calculated carrier cavity characteristics chromaticity coefficient color communication concentration conductivity confinement constant decreases density dependence device diagram diffusion dislocations distribution doping effect efficiency electrical electron emission emission spectrum emitting energy enhancement equation et al example fiber figure frequency GaAs GaAsP GaInN given green heterostructure higher holes illumination increases indices injection intensity internal junction laser layer LEDs length Lett lifetime light source light-emitting diodes located lower luminous material measured mode obtained occur optical p-n junction p-type phosphor photon Phys radiative range RCLED recombination reduced References reflection reflectors refractive index resistance respectively result semiconductor shown in Fig shows spectral spectrum spontaneous structure substrate surface temperature thickness unit values voltage wavelength
Popular passages
Page 2 - During an investigation of the unsymmetrical passage of current through a contact of carborundum and other substances a curious phenomenon was noted. On applying a potential of 10 volts between two points on a crystal of carborundum, the crystal gave out a yellowish light.
Bibliographic information
| Title | Light-Emitting Diodes |
| Author | E. Fred Schubert |
| Edition | 2, revised |
| Publisher | Cambridge University Press, 2006 |
| ISBN | 1139455222, 9781139455220 |
| Subjects | › › Science / Physics / Condensed Matter Technology & Engineering / Electronics / General Technology & Engineering / Electronics / Optoelectronics Technology & Engineering / Materials Science / General Technology & Engineering / Superconductors & Superconductivity |
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