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Proceedings Paper

Organic photo sensors operating at high speed utilizing poly(9,9-dioctylfluorene) derivative and fullerene derivative fabricated by solution process
Author(s): Yutaka Ohmori; Tatsunari Hamasaki; Hirotake Kajii; Taichiro Morimune
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Paper Abstract

Organic photodiodes have been discussed as high-speed photo sensors fabricated by solution process. Poly(9,9- dioctylfluorene) (PFO) or poly(9,9-dioctylfluorene-co-bithiophene) (F8T2) mixed with [6-6]phenyl-C61-butyric acid methylester (PCBM) were used as photo sensitive materials. The device shows high photosensitive characteristics in the visible region. The photocurrent and photo response speed increases as increasing the reverse bias voltage. Both the devices have a cut-off frequency of approximately 60 MHz under reverse bias of 10 V. Clear response pulse signals at 80 MHz were received using a sinusoidally modulated laser light illumination. The printable organic photo sensors have a huge potential in a field of arrayed photo sensors in a large area, scanners and so on.

Paper Details

Date Published: 18 May 2009
PDF: 8 pages
Proc. SPIE 7356, Optical Sensors 2009, 73560W (18 May 2009); doi: 10.1117/12.820145
Show Author Affiliations
Yutaka Ohmori, Osaka Univ. (Japan)
Tatsunari Hamasaki, Osaka Univ. (Japan)
Hirotake Kajii, Osaka Univ. (Japan)
Taichiro Morimune, Takuma National College of Technology (Japan)


Published in SPIE Proceedings Vol. 7356:
Optical Sensors 2009
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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