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Proceedings Paper

Polymer-C60 charge-transfer blends: enhanced photosensitivity via a bicontinuous network of donor/acceptor heterojunctions
Author(s): Gang Yu; Alan J. Heeger
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Paper Abstract

Optical quality organic blend films were developed with high photosensitivity. These materials are composed with conjugated polymers, P3OT, or poly(2-methoxy-5-(2-ethyl- hexyloxy)-1,4-phenylene vinylene), MEH-PPV) and fullerene molecules. These blends are soluble to common organic solvents, and are processable at room temperature. Thin film devices in sandwich configurations were fabricated with high quantum efficiency. The carrier collection efficiency and energy conversion efficiency in the MEH-PPV:C60 photovoltaic cells are approximately 29 percent electrons/photons and 2.9 percent respectively, better by more than two orders of magnitude than devices made with MEH-PPV alone. The photosensitivity are even higher with reverse bias, approximately 0.2A/W-0.3A/W in visible region at a few volts. These numbers are comparable to photodiodes made with inorganic semiconductors.

Paper Details

Date Published: 16 December 1996
PDF: 6 pages
Proc. SPIE 2854, Fullerenes and Photonics III, (16 December 1996); doi: 10.1117/12.262974
Show Author Affiliations
Gang Yu, UNIAX Corp. (United States)
Alan J. Heeger, UNIAX Corp. and Univ. of California/Santa Barbara (United States)

Published in SPIE Proceedings Vol. 2854:
Fullerenes and Photonics III
Zakya H. Kafafi, Editor(s)

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