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AlGaN基p-i-n光电探测器负响应现象研究

Keywords: 光电探测器,负响应,持续光电导

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Abstract:

对AlGaN基p-i-n光电探测器的负光电响应特性进行研究,从实验上证实了器件中p型接触电极的肖特基特性是导致该现象的主导因素.不同偏压下的响应光谱表明,这些AlGaN光伏器件中存在较为明显的光导响应特性.光照和暗背景条件下的C-f曲线验证了器件中的持续光电导特性,而高铝组分铝镓氮材料内存在的大量缺陷被认为是该现象的起因.系统地研究了AlGaN基p-i-n光电探测器存在的负响应现象及其微观机理,为铝镓氮基日盲器件光电性能的优化提供了重要参考依据.

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