• 专利标题:   LED, has graphene layer formed on second conductive semiconductor layer, two electrodes formed on first conductive semiconductor layer and graphene layer, and metal nanoparticles formed on some region of graphene layer.
  • 专利号:   US2013285012-A1, KR2013120876-A, US8779411-B2, KR1634338-B1
  • 发明人:   LEE D S, SHIM J P, PARK S J, CHOE M H, KIM D H, LEE T H
  • 专利权人:   GWANGJU INST SCI TECHNOLOGY
  • 国际专利分类:   H01L033/04, H01L033/22, H01L033/36, H01L033/38, H01L029/06, H01L031/00, H01L033/00
  • 专利详细信息:   US2013285012-A1 31 Oct 2013 H01L-033/04 201376 Pages: 16 English
  • 申请详细信息:   US2013285012-A1 US679353 16 Nov 2012
  • 优先权号:   KR044091

▎ 摘  要

NOVELTY - The LED has a compound semiconductor layer (20) provided with two conductive semiconductor layers (22, 26) and an active layer (24). A graphene layer (30) is formed on the second conductive semiconductor layer. A set of metal nanoparticles is formed on the graphene layer. A first electrode is formed on the first conductive semiconductor layer. A second electrode is formed on the graphene layer. The metal nanoparticles are formed on some region of the graphene layer and occupy from 20% to 40% of a surface area of the graphene layer. USE - LED. ADVANTAGE - The metal nanoparticles are formed on some region of the graphene layer, so that adhesion between the second conductive semiconductor layer composed of inorganic materials and the graphene layer can be enhanced, thus securing stability and reliability of the LED. The LED allows uniform spreading of electric current, thus allowing stable emission of light through a surface area of the LED. The metal nanoparticles can have a particle diameter ranging from 50 nm to 300 nm, so that the metal nanoparticles provide roughness to the surface of the LED and cause diffuse scattering instead of total reflection on the border of the LED, thus improving light emission efficiency of the LED. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for manufacturing an LED. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of an LED. Substrate (10) Compound semiconductor layer (20) Conductive semiconductor layers (22, 26) Active layer (24) Graphene layer (30)