• 文献标题:   Ag/Ni/Multilayer Graphene Reflective Ohmic Contacts with p-Type GaN
  • 文献类型:   Article
  • 作  者:   CHEN LC, CHIANG MH
  • 作者关键词:   multilayer graphene, reflective contact, flipchip led, gan
  • 出版物名称:   SCIENCE OF ADVANCED MATERIALS
  • ISSN:   1947-2935 EI 1947-2943
  • 通讯作者地址:   Natl Taipei Univ Technol
  • 被引频次:   0
  • DOI:   10.1166/sam.2014.1695
  • 出版年:   2014

▎ 摘  要

Multilayer graphene (MLG) is an opaque material and a poor conductor. Therefore, it is not suitable for use as the transparent conductive layer in GaN-based light-emitting diodes (LEDs). This study discusses Ag/Ni/MLG ohmic contacts with p-GaN for use in flip-chip light-emitting diodes (LEDs). The optimal conditions for fabricating Ag/Ni/MLG contacts are adopted to minimize the specific contact resistance to 1.02x 10(-3) Omega cm(2), as revealed after heat treatment at an alloying temperature of 700 degrees C for 10 min in nitrogen.