Flexible image sensor array with bulk heterojunction organic photodiodes

Details

Event Applied Physics Letters

Authors

Tse Nga Ng
Wong, William S.
Sambandan, Sanjiv
Street, Robert A.
Technical Publications
May 28th 2008
Thick organic bulk heterojunction photodiodes with low dark current <1 nA/cm^2 and efficient charge collection are reported. An electric field >1V/um is sufficient to achieve >75% charge collection in films of MEHPPV and PCBM blends up to 4 um thick, and the rate of photocurrent decay is reduced at saturation fields. The integration of a 4 um thick sensor layer onto a flexible a-Si:H TFT backplane gave an image sensor array with 35% external quantum efficiency and noise equivalent power of 30 pW/cm^2 at reverse bias voltage of -4V.

Citation

Ng, T.; Wong, W. S.; Chabinyc, M.; Sambandan, S.; Street, R. A. Flexible image sensor array with bulk heterojunction organic photodiodes. Applied Physics Letters. 2008 May 26; 92 (21): 213303.

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