Multi color solid state led/laser
    1.
    发明公开
    Multi color solid state led/laser 审中-公开
    Mehrfarbige LED /激光

    公开(公告)号:EP1326291A1

    公开(公告)日:2003-07-09

    申请号:EP03075791.8

    申请日:2000-11-01

    IPC分类号: H01L33/00

    摘要: A light emitting diode (LED) grown on a substrate doped with one or more rare earth or transition element. The dopant ions absorb some or all of the light from the LED's active layer, pumping the electrons on the dopant ion to a higher energy state. The electrons are naturally drawn to their equilibrium state and they emit light at a wavelength that depends on the type of dopant ion. The invention is particularly applicable to nitride based LEDs emitting UV light and grown on a sapphire substrate doped with cromium. The chromium ions absorb the UV light, exciting the electrons on ions to a higher energy state. When they return to their equilibrium state they emit red light and some of the red light will emit from the LED's surface.

    摘要翻译: 在掺杂有一种或多种稀土或过渡元素的衬底上生长的发光二极管(LED)。 掺杂剂离子吸收来自LED有源层的一些或全部光,将掺杂剂离子上的电子泵送到更高的能量状态。 电子被自然地吸引到它们的平衡状态,并且它们以取决于掺杂剂离子的类型的波长发光。 本发明特别适用于发射紫外光的氮化物基LED,并且在掺有溴化镓的蓝宝石衬底上生长。 铬离子吸收紫外光,激发离子上的电子到更高的能量状态。 当它们返回到平衡状态时,它们发出红光,一些红光将从LED的表面发射。