4.6 Article

Planar heterojunction perovskite/PC71BM solar cells with enhanced open-circuit voltage via a (2/1)-step spin-coating process

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 38, Pages 15897-15903

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta03674c

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Funding

  1. National Science Council (NSC), Taiwan, ROC [NSC101-2113-M-008-008-MY3]

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A two-step, spin-coating process to synthesize a high quality perovskite film at room temperature at ambient atmosphere is reported. Combining an optimized PEDOT:PSS hole-transport layer and a PC71BM acceptor, the device achieved a power conversion efficiency of 16.31% with a remarkably high V-oc of 1.05 V and FF of 0.78. The efficiency reproducibility of the devices is also high: 80% of devices achieve efficiency higher than 15%.

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