1. Preparation of photovoltaic cells from sexithiophene-C-60 blends
- Author
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Veenstra, SC, Malliaras, GG, Brouwer, HJ, Esselink, FJ, Krasnikov, VV, vanHutten, PF, Wildeman, J, Jonkman, HT, Sawatzky, GA, Hadziioannou, G, Mohlmann, GR, and Chemistry of (Bio)organic Materials and Devices
- Subjects
photovoltaic effect ,morphology ,organic thin films ,blends - Abstract
Large photovoltaic responses have been recently observed in devices based on conjugated polymer-C-60 blends. Their enhanced performance, which relies on the formation of a bicontinuous network of donor-acceptor heterojunctions, is very sensitive to the morphology of the blend. In this paper, we propose sexithiophene-C-60 blends, prepared by coevaporation, as a model system for the study of these devices. Preliminary results suggest a microphase-separated morphology with a domain size comparable to the exciton diffusion length. A photovoltaic device with quantum efficiency of 1% is demonstrated.
- Published
- 1996