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低温下分子束外延生长GaAs的光致发光研究
Authors
吕振东
周向前
+4 more
孙宝权
崔丽秋
徐仲英
江德生
Publication date
1 January 1999
Publisher
Abstract
研究了低温下分子束外延生长GaAs(LTG-GaAs)样品的稳态和瞬态发光。从200℃生长的样品中可测到很弱但清晰可辨的稳态发光峰,峰的能量位置相对于体GaAs激子峰有一定蓝移。此外,发现在体GaAs上生长LTG-GaAs薄膜可大大减小体GaAs衬底材料中本片发光的衰减时间,但对(e,A°)发光影响不大。用上转换方法对退火和未退火LTG-GaAs样品瞬态发光进行了测量,获得了关于LTG-GaAs中复合中心和陷阱中心的信息
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Last time updated on 15/03/2019