A Subversive Innovation on GaN P-Type Reflective Electrode Using Electroless Silver Plating
In this work,we first proposed an innovation on GaN p-type reflective electrode in flip-chip LEDs (FCLEDs) using a novel method so called electroless silver plating (ESP).In our ESP method,we use chemical way to form a perfect Ag reflector,differ from traditional fabrication of p-type reflective electrode using electron beam deposition (EB).Under our investigation,the Ag reflective electrode formed by ESP possesses better optical and electric characteristics.Compared with EB,the reflectance of electrode by ESP over the whole visible light spectrum was 93%,higher than EB samples,which only show 82%.Otherwise,ohmic contact characteristic between metal and GaN also shows the same rule as reflectance.ESP samples exhibit better specific contact resistance than EB samples,they”re 6.5*10-3Ω·cm2 and 6*10-2Ω·cm2,respectively.Moreover,the fantastic results of Ⅰ-Ⅴ as well as L-I measurement likewise verify electroless silver plating to be a potential manufacturing technology of p-type reflective electrode.
Qinjin Wang Junxi Wang Guohong Wang Jinmin Li Jun Ma Teng Zhan Xiaoyan Yi Enqing Guo Zhiqiang Liu Ting Wang Xiansong Fu Ting Wang
R&D Center for Semiconductor Lighting,Chinese Academy of Sciences,Beijing 100083,P.R.China;State Key R&D Center for Semiconductor Lighting,Chinese Academy of Sciences,Beijing 100083,P.R.China;State Key School of Electronics & Information Engineering,Tianjin Polytechnic University,Tianjin 300387 China Avic Aerospace Life-Support Industries,Ltd,Hubei,441003,China
国内会议
深圳
英文
1-4
2015-11-02（万方平台首次上网日期，不代表论文的发表时间）