期刊
APPLIED PHYSICS LETTERS
卷 117, 期 16, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0027697
关键词
-
资金
- JSPS KAKENHI [JP16H04335, JP16H06428, JP20K04585]
Internal quantum efficiency (IQE) and stimulated emission properties of AlGaN-based UV-C multiple quantum wells grown on c-plane sapphire substrates were assessed using photoluminescence spectroscopy. The IQEs were estimated to be 53% at room temperature and 16% at 750K. Furthermore, optically pumped stimulated emission was clearly observed at room temperature. The threshold excitation power densities were estimated to be 13kW/cm(2) at 10K and 69kW/cm(2) at room temperature. The temperature dependence of the threshold excitation power density suggested that the mechanism of optical gain formation changed from excitonic transition to degenerated electron-hole plasma between 200 and 250K. Published under license by AIP Publishing. https://doi.org/10.1063/5.0027697
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据