18 May 2009 Organic photo sensors operating at high speed utilizing poly(9,9-dioctylfluorene) derivative and fullerene derivative fabricated by solution process
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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.
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Yutaka Ohmori, Yutaka Ohmori, Tatsunari Hamasaki, Tatsunari Hamasaki, Hirotake Kajii, Hirotake Kajii, Taichiro Morimune, Taichiro Morimune, } "Organic photo sensors operating at high speed utilizing poly(9,9-dioctylfluorene) derivative and fullerene derivative fabricated by solution process", Proc. SPIE 7356, Optical Sensors 2009, 73560W (18 May 2009); doi: 10.1117/12.820145; https://doi.org/10.1117/12.820145
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