T. Jin, Wang Rui, Zhong Shu, S. K. Yee, Ling Jun, Chen Zhikuan, Vijila Chellappan, Chen Wei
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引用次数: 8
Abstract
In this work, a simple strategy is introduced to eliminate the kink observed in J-V curves of inverted polymer solar cells (i-PSCs) using a polyelectrolyte electron selective layer. By incorporating zinc oxide nanoparticles (ZnO NPs) with poly [(9,9-bis(3 � -((N,Ndimethyl)-N-ethylammonium)-propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)] dibromide (PFN-Br), fill factor was improved by 22% and overall device efficiency was significantly improved by 48%. Moreover, the presence of PFN-Br greatly enhances film forming properties of ZnO NPs, improving efficiency by 13% compared to using just ZnO NPs. This composite interfacial layer does not require any post-processing treatment, thus providing for a facile method to solve interface problems in i-PSCs.
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