Light Emitting Diode (LED): What is it & How Does it Work?
2012年2月24日 · LEDs produce visible light through the electroluminescence effect, occurring when direct current passes through a doped crystal with a PN junction. Doping involves adding elements from columns III and V of the periodic table.
Light Emission, Photoluminescence, LEDs - Britannica
electroluminescence, production of light by the flow of electrons, as within certain crystals. Electroluminescence is one of the few instances in which a direct conversion of electric energy into visible light takes place without the generation of …
We will focus on light-emitting diodes (LEDs). The efficiency of LEDs will be determined by the radiative recombination rate.
Basic Principles of LED - SpringerLink
2020年9月1日 · This chapter takes p–n junction as the theoretical model, mainly introduces the basic principle of LED, radiative and non-radiative radiation, the optical and electrical characteristics of LED, and the realization method of white LED.
These features make the LED device attractive for luminaire. Its basic structure is a p–n junction. The basic principle is that electrons and holes in semiconductors recombine and emit photons under forward bias.
Luminescence and the Light Emitting Diode - ScienceDirect
Comprised of 10 chapters, this book begins with an introduction to the crystal structure and growth, as well as the optical and electrical properties of LED materials. The detailed fabrication of the LED is then considered, along with the luminescence of …
Electroluminescence - an overview | ScienceDirect Topics
Electroluminescence is a phenomenon of light emission of a material under the influence of an electric field [30]. The commonly used electroluminescent devices in daily life are certainly light-emitting diodes (LEDs) [30]. Another type of electroluminescence is produced by some crystal when an electric current is pass through them [31].
Luminescence | Definition, Examples, Types, & Facts | Britannica
Luminescence, emission of light by certain materials when they are relatively cool. It is in contrast to light emitted from incandescent bodies, such as burning wood or coal, molten iron, and wire heated by an electric current.
LED TECHNOLOGY: From Electroluminescence To You - LIGHTVU
According to Wikipedia, a light-emitting diode (LED) is a semiconductor light source that emits light when a current flows through it. Electroluminescence, the concept that makes LED technology possible, was discovered way back in 1907.
Persistent luminescence: An insight - ScienceDirect
2016年11月1日 · Persistent luminescence is the underlying mechanism that constitutes one of the aspects of solid state lighting technology. LED light bulbs are extremely energy efficient and sustainable since the power consumption is brought down by 80% when compared to conventional light bulbs.
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