標題: Improved light reflectance and thermal stability of Ag-based ohmic contacts on p-type GaN with La additive
作者: Chen, I-Chen
Cheng, Bo-Yuan
Ke, Wen-Cheng
Kuo, Cheng-Huang
Chang, Li-Chuan
照明與能源光電研究所
Institute of Lighting and Energy Photonics
關鍵字: Ohmic contact;La additive;Light reflectance;Specific contact resistivity
公開日期: 1-五月-2013
摘要: We investigated the effect of La additive on the improvement of light reflectance and thermal stability of Ag contacts on p-GaN. A high reflectance of over 90% at 460 nm wavelength and low specific contact resistivity of 5.5 x 10(-5) Omega cm(2) were obtained from La-containing Ag contacts annealed at 300 degrees C for 1 min, which also show better thermal stability than Ag contacts after annealing in air ambient. The experimental results reveal that the addition of La could effectively slow down Ag migration in < 1 1 1 > direction during annealing, and thus suppress the Ag agglomeration at elevated temperature, leading to a good ohmic contact with improved high reflectance and thermal stability. (C) 2013 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.spmi.2013.02.002
http://hdl.handle.net/11536/21913
ISSN: 0749-6036
DOI: 10.1016/j.spmi.2013.02.002
期刊: SUPERLATTICES AND MICROSTRUCTURES
Volume: 57
Issue: 
起始頁: 51
結束頁: 57
顯示於類別:期刊論文


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