Macao SAR
联系人 Mr. Song
RUA QUATRO BAIRRO IAO HON N 50 INDUSRIAL, MACAU
A light-emitting diode (LED) is a semiconductor light source.[3] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Introduced as a practical electronic component in ***2,[4] early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness.
When a light-emitting diode is forward-biased (switched on), electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electro luminescence and the color of the light (corresponding to the energy of the photon) is determined by the energy gap of the semiconductor.| 国家: | Macao SAR |
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