虽然半导体发光二极管(LED)作为低成本长寿命固态光源在各种应用中具有潜在的用途,但是它们一直受到了低采光效率的限制——在高价电材料中,它们发射的光大部分被消耗在了被控制的模式中。美国电子研究实验室和麻省理工学院材料科学与工程中心的科学家已解决了这个问题,他们利用一种二维光子晶体 Although semiconductor light-emitting diodes (LEDs) have potential applications in a variety of applications as low-cost, long-life, solid state light sources, they have been limited by the low light extraction efficiency - most of the light they emit in high-priced materials is consumed In the mode of control. Scientists at the Center for Materials Science and Engineering at the American Institute for Electronic Research and the Massachusetts Institute of Technology have solved the problem by using a two-dimensional photonic crystal