发明申请
- 专利标题: High efficiency light emitting diode (LED) with optimized photonic crystal extractor
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申请号: US11067956申请日: 2005-02-28
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公开(公告)号: US20060192217A1公开(公告)日: 2006-08-31
- 发明人: Aurelien David , Claude Weisbuch , Steven DenBaars
- 申请人: Aurelien David , Claude Weisbuch , Steven DenBaars
- 专利权人: The Regents of the University of California
- 当前专利权人: The Regents of the University of California
- 主分类号: H01L29/22
- IPC分类号: H01L29/22
摘要:
A high efficiency, and possibly highly directional, light emitting diode (LED) with an optimized photonic crystal extractor. The LED is comprised of a substrate, a buffer layer grown on the substrate (if needed), an active layer including emitting species, one or more optical confinement layers that tailor the structure of the guided modes in the LED, and one or more diffraction gratings, wherein the diffraction gratings are two-dimensional photonic crystal extractors. The substrate may be removed and metal layers may be deposited on the buffer layer, photonic crystal and active layer, wherein the metal layers may function as a mirror, an electrical contact, and/or an efficient diffraction grating.