標題: Polymer photodetector with voltage-adjustable photocurrent spectrum
作者: Chen, En-
Chang, Chia-Yu
Shieh, Ji-Ting
Tseng, Shin-Rong
Meng, Hsin-Fei
Hsu, Chain-Shu
Horng, Sheng-Fu
應用化學系
物理研究所
Department of Applied Chemistry
Institute of Physics
關鍵字: conducting polymers;electron-hole recombination;organic semiconductors;photodetectors;polymer blends
公開日期: 25-Jan-2010
摘要: Polymer photodetectors with voltage-adjustable photoresponse from visible to near infrared range are demonstrated. Poly(3-hexylthiophene) and (6,6)-phenyl-C61-butyric acid methyl ester (PCBM) blend is used as the active layer. The photoresponse can be continuously adjusted by the thickness of the active layer as well as the applied voltage bias. The thickness of the active layer is varied from 250 nm to 16.2 mu m. The mechanism for the photoresponse adjusted by the thickness can be attributed to the absorption of the photons in the infrared range by thick PCBM layer. The mechanism for the photoresponse adjusted by the applied bias can be attributed to the carrier recombination reduction when the applied bias increases. The adjustable photodetector also has high operating speed up to 10 kHz.
URI: http://dx.doi.org/10.1063/1.3284648
http://hdl.handle.net/11536/5953
ISSN: 0003-6951
DOI: 10.1063/1.3284648
期刊: APPLIED PHYSICS LETTERS
Volume: 96
Issue: 4
結束頁: 
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