科研之友
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摘要
Experiments on photoinduced charge carrier extraction using linearly increasing voltage (photo-CELIV) are reported for an organic thin-film device having an active layer of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) below 90K down to 1.6 K. CELIV peaks for different rates of voltage increase appear at almost the same electric fields at a temperature below 30 K. From this result, it is concluded that the CELIV signal does not reflect mobility at low temperatures. An analytical model that relates low-temperature CELIV signals to the trap density function is proposed.
- 出版日期2011-6
