Sanjay S. Ghosh, Ganesh S. Lonakar, Mrunal S. Mahajan, S. Jadkar, J. Sali
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P3HT:PCBM/TiOx Interface Modification through Annealing for Improvement in Organic Solar Cell Performance
We describe the study of annealing after coating a TiOx film over P3HT:PCBM bulk heterojunction layer to improve the interface in order to improve the solar cell performance. We demonstrate that annealing after coating the TiOx interfacial film improves the interface between the bulk-heterojunction and TiOx layers and hence the device performance. However upon annealing the devices before coating the TiOx layer results in highly degraded performance. A systematic explanation of the improved device performance is