Improved light reflectance and thermal stability of Ag-based ohmic contacts on p-type GaN with la additive

I. Chen Chen, Bo Yuan Cheng, Wen Cheng Ke, Cheng Huang Kuo, Li Chuan Chang

研究成果: 雜誌貢獻期刊論文同行評審

5 引文 斯高帕斯(Scopus)

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 × 10-5 Ω cm2 were obtained from La-containing Ag contacts annealed at 300 °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.

原文???core.languages.en_GB???
頁(從 - 到)51-57
頁數7
期刊Superlattices and Microstructures
57
DOIs
出版狀態已出版 - 2013

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