Polymer-C60 charge-transfer blends: enhanced photosensitivity via a bicontinuous network of donor/acceptor heterojunctions

Gang Yu; Alan J. Heeger

doi:10.1117/12.262974

16 December 1996 Polymer-C₆₀ charge-transfer blends: enhanced photosensitivity via a bicontinuous network of donor/acceptor heterojunctions

Gang Yu, Alan J. Heeger

Author Affiliations +

Proceedings Volume 2854, Fullerenes and Photonics III; (1996) https://doi.org/10.1117/12.262974
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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.

Citation Download Citation

Gang Yu and Alan J. Heeger "Polymer-C₆₀ charge-transfer blends: enhanced photosensitivity via a bicontinuous network of donor/acceptor heterojunctions", Proc. SPIE 2854, Fullerenes and Photonics III, (16 December 1996); https://doi.org/10.1117/12.262974

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