NANOSCALE SIZE EFFECTS ON PHOTOCONDUCTIVITY OF SEMICONDUCTING POLYMERTHIN-FILMS

Authors
ZHANG XJ JENEKHE SA PERLSTEIN J
Citation
Xj. Zhang et al., NANOSCALE SIZE EFFECTS ON PHOTOCONDUCTIVITY OF SEMICONDUCTING POLYMERTHIN-FILMS, Chemistry of materials, 8(8), 1996, pp. 1571
Citations number
36
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Chemistry of materials → ACNP
ISSN journal
08974756
Volume
8
Issue
8
Year of publication
1996
Database
ISI
SICI code
0897-4756(1996)8:8<1571:NSEOPO>2.0.ZU;2-P
Abstract
Bilayer polymer photoreceptors containing a trap-free tri-p-tolylamine -doped polycarbonate (TTA:PC) layer and a conjugated polymer layer are used to study nanoscale size effects in electronic polymers. A 3-fold enhancement of photogeneration quantum efficiency is observed as the thickness of poly(2,5-pyridylenebenzo-bisthiazole) (PPyBT) is reduced from 100 to 10 nm. The nanometer size effects originate from the small exciton diffusion lengths and the interfacial nature of the photocarr ier generation.