Efficient bulk heterojunction polymer solar cells using PEDOT/PSS doped with solution-processed MoO3 as anode buffer layer
2012
Abstract Efficient and stable Bulk Heterojunction polymer solar cells based on a P3HT:PC 61 BM active layer have been fabricated by inserting a convenient, low cost, solution-processed, PEDOT/PSS anode buffer layer doped with solution-processed MoO 3 . The MoO 3 consist of small “islands” in the blend film extends the interfacial contact area between the P3HT:PC 61 BM and PEDOT/PSS to facilitate hole collection, and meanwhile blocking electron transport at the anode. Hence the improved J sc and FF dramatically increase the power conversion efficiency (PCE) from 2.98% to 3.94%. After anode buffer layer doped with the MoO 3 , the device stability also has a significant improvement.
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