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http://dx.doi.org/10.4313/TEEM.2012.13.2.98

Stability of Bulk Heterojunction Organic Solar Cells with Different Blend Ratios of P3HT:PCBM  

Kwon, Moo-Hyun (Department of Applied Chemistry, Woosuk University)
Publication Information
Transactions on Electrical and Electronic Materials / v.13, no.2, 2012 , pp. 98-101 More about this Journal
Abstract
I studied the stability of organic photovoltaic cells in terms of P3HT:PCBM-71 blend ratio as a function of storage time. I obtained the best cell performance by optimizing the blend ratio of electron donor and electron acceptor within the active layer. In this study, I found that the more the P3HT:PCBM ratio increases within the active layer, the more the cell efficiency decreases as the storage time increases. As a result, the best optimized blend ratio was the 1:0.6 ratio of P3HT:PCBM-71, and cell efficiency of the device with the 1:0.6 blend ratio was 4.49%. The device with the best cell efficiency showed good stability.
Keywords
Stability; Photovoltaic device; Bulk heterojunction; Active layer; Blend ratio;
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