LIGHT EMITTING DIODE, PHOTODIODE, DISPLAYS, AND METHOD FOR FORMING THE SAME

摘要

The present invention is related to solid state light emitting diodes (LEDs), photodetector/photovoltaic devices, displays, applications and methods for making the same. As demonstrated experimentally, the LEDs, as disclosed herein, have high light emission efficiency, high contrast, high brightness, low ambient light reflection, low light glare, and a tunable display viewing angle. The same LED disclosed here can be used as high efficiency displays and high efficiency photovoltaic device or photodetectors. This means that the same device, where used in array form, can be used as the display (LED operation mode) and power supply (photovoltaic device mode) and camera (photodetector and imaging mode).

主权项

1. A light-emitting diode (LED), comprising:
a photonic resonant cavity antenna comprising:
(a) a top metallic layer that is light transmissive and has a lateral structure smaller than wavelength of the light;(b) a bottom metallic layer; and(c) a light emitting material layer of semiconductor positioned between the top metallic layer and the bottom metallic layer for generated lightwhereas the generated light transmitted through the top metallic layer, and whereas the LED has a low reflection to an ambient light, improved light generation in the cavity and/or improved light transmission to outside the cavity, and improved contrast.