| Title | Flexible image sensor array with bulk heterojunction organic photodiode |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Authors | T.N. Ng, W.S. Wong, M.L. Chabinyc, S. Sambandan, and R.A. Street |
| Journal | APPLIED PHYSICS LETTERS |
| Volume | 92 |
| Pagination | 213303 |
| Date Published | MAY 26 |
| ISSN | 0003-6951 |
| Abstract | Thick organic bulk heterojunction photodiodes with low dark current < 1 nA/cm(2) and efficient charge collection are reported. An electric field > 1 V/mu m is sufficient to achieve > 75% charge collection in films of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene-vinylene] and [6,6]-phenyl-C61-butyric acid methyl ester blends up to 4 mu m thick, and the rate of photocurrent decay is reduced at saturation fields. The integration of a 4 mu m thick sensor layer onto a flexible amorphous silicon thin-film transistor 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 -4 V. (c) 2008 American Institute of Physics. |
| DOI | 10.1063/1.2937018 |
