| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1430974 | Materials Science and Engineering: C | 2007 | 4 Pages |
Abstract
We have fabricated and characterized photodetectors based on organic semiconductors. Concentration gradients of an electron-donor and an electron-acceptor were achieved between the two electrodes. Such gradients in the molecular scale, introduced via layer-by-layer electrostatic assembly, provided an extended region for exciton dissociation and bicontinuous pathways for carrier transport to the opposite electrodes. Results in the graded heterostructures have been compared with bulk-heterojunction devices.
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Authors
Satyajit Sahu, Amlan J. Pal,