期刊
APPLIED PHYSICS REVIEWS
卷 2, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4926767
关键词
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资金
- Columbia Optics and Quantum Electronics IGERT under NSF [DGE-1069260]
- NSF [CBET1264927]
Photocurrent spectroscopy (PCS) and photocurrent microscopy (PCM) are powerful tools that can probe the underlying mechanisms of charge generation and transport in organic semiconductor devices. There has been significant progress in the use of these techniques, which has yielded a number of insights into the underlying materials and operation of the devices. Despite the potential for PCS and PCM to become standard tools, however, a consensus has not been reached on (1) its uses and (2) the underlying mechanisms which produce the photoresponse. This is particularly true for measurements of pentacene devices, as the energy dynamics of pentacene are complex. Accordingly, here we report the current body of PCS and PCM of pentacene devices, offer interpretations of the data, and discuss which questions remain unanswered. We have divided the reviewed work into four categories based on the goals of the study and the technique used: photocurrent spectroscopy, scanning photocurrent microscopy, mobility, and trap density-of-states. (C) 2015 AIP Publishing LLC.
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