Organic photo sensors operating at high speed utilizing poly(9,9-dioctylfluorene) derivative and fullerene derivative fabricated by solution process

Yutaka Ohmori; Tatsunari Hamasaki; Hirotake Kajii; Taichiro Morimune

doi:10.1117/12.820145

18 May 2009 Organic photo sensors operating at high speed utilizing poly(9,9-dioctylfluorene) derivative and fullerene derivative fabricated by solution process

Yutaka Ohmori, Tatsunari Hamasaki, Hirotake Kajii, Taichiro Morimune

Author Affiliations +

Proceedings Volume 7356, Optical Sensors 2009; 73560W (2009) https://doi.org/10.1117/12.820145
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

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.

Citation Download Citation

Yutaka Ohmori, Tatsunari Hamasaki, Hirotake Kajii, and 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); https://doi.org/10.1117/12.820145

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