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Erschienen in:
01.02.2015
Effects of fullerene monolayer on the performance of zinc oxide/poly(3-hexylthiophene) bilayer hybrid solar cells
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 2/2015
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Abstract
Solution-processed hybrid solar cells are fabricated based on ZnO nanoparticles (NPs) and poly(3-hexylthiophene) (P3HT) in bilayer structure. After interfacial modification using phenyl-C61-butyric acid self-assembly monolayer (SAM), enhanced power conversion efficiency up to 0.56 % was achieved. Comparing to 0.17 % obtained by the devices without C60-SAM, there is an overall improvement of 229 %. The monolayer formation on the surface of ZnO NPs can reduce the surface traps, enhance the electronic coupling between ZnO and P3HT, thus reducing the series resistance and promoting efficient charge separation, which is the main cause for improving the current density and the performance. This research could open up a new pathway to improve further the performance of polymer/nanocrystal hybrid solar cells.