Insight Into the Role of PC₇₁BM on Enhancing the Photovoltaic Performance of Ternary Organic Solar Cells.

ABSTRACT: The development of non-fullerene acceptor molecules have remarkably boosted power conversion efficiency (PCE) of polymer solar cells (PSCs) due to the improved spectral coverage and reduced energy loss. An introduction of fullerene molecules into the non-fullerene acceptor-based blend may further improve the photovoltaic performance of the resultant ternary PSCs. However, the underlying mechanism is still debatable. Herein, the ternary PSCs based on PBDB-T:ITIC:PC₇₁BM blend were fabricated and its PCE was increased to 10.2% compared to 9.2% for the binary PBDB-T:ITIC devices and 8.1% for the PBDB-T:PC₇₁BM PSCs. Systematic investigation was carried out to disclose the effect of PC₇₁BM on the blend morphology and charge transport behavior. It is found that th

SUBMITTER: Wang B 

PROVIDER: S-EPMC5996040 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature