標題: | Pentacene-Based Organic Phototransistor With High Sensitivity to Weak Light and Wide Dynamic Range |
作者: | Zan, Hsiao-Wen Kao, Shih-Chin Ouyang, Shiang-Ruei 光電工程學系 Department of Photonics |
關鍵字: | Channel length;pentacene;photoresponsivity;phototransistor;thin-film transistor (TFT) |
公開日期: | 1-二月-2010 |
摘要: | In this letter, the channel length effect, combined with the photoelectric field effect of organic phototransistors, has been investigated for the first time. Reducing the channel length and applying a positive gate bias during illumination enhance electron trapping effectively and hence improve the photoresponsivity of a pentacene-based phototransistor. The sensing dynamic range and the photosensitivity to very weak light (in the range of microwatts per square centimeter) are also discussed through the interaction between deep trapped states, interface energy-band bending, and photoexcited electrons. |
URI: | http://dx.doi.org/10.1109/LED.2009.2037591 http://hdl.handle.net/11536/5896 |
ISSN: | 0741-3106 |
DOI: | 10.1109/LED.2009.2037591 |
期刊: | IEEE ELECTRON DEVICE LETTERS |
Volume: | 31 |
Issue: | 2 |
起始頁: | 135 |
結束頁: | 137 |
顯示於類別: | 期刊論文 |