光电子学
光电探测器
欧姆接触
有机半导体
量子效率
材料科学
异质结
氧化铟锡
半导体
铟
基质(水族馆)
薄膜
图层(电子)
纳米技术
海洋学
地质学
作者
F. F. So,Stephen R. Forrest
摘要
High-efficiency high-bandwidth organic-on-inorganic (OI) semiconductor heterojunction photodetectors are discussed. The devices consist of a thin layer of the organic semiconductor perylenetetracarboxylic dianhydride (PTCDA) in contact with an inorganic semiconductor (Si) substrate. Indium tin oxide (ITO) is used as a transparent ohmic contact to the organic film. The external quantum efficiency of the detector was 85%, giving an internal quantum efficiency approaching 100%. The response time to fast optical pulses was 5 ns. Response times of OI detectors can be further reduced to about 100 ps by optimization of device parameters.< >
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