Morphological and optical engineering for high-performance polymer solar cells.
ACS applied materials & interfaces(2019)
摘要
We demonstrate morphological and optical engineering by using processing additives and optical spacer in for polymer solar cells. Among various processing additives, introduction of diphenyl ether into the active layer results in smoothest surface roughness with uniform and well-distributed donor:acceptor domains and the device with DPE shows the highest device efficiency of 10.22% due to enhanced charge collection efficiency and minimized recombination loss. Additional ZnO optical spacer on the active layer controls the distribution of the electric field in whole device and enhance the light absorption within the active layer, thereby improving device efficiency up to 10.81%.
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关键词
morphology engineering,optical engineering,processing additive,polymer solar cells,bulk heterojunction
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