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The N, N-Dimethylformamide Annealing for Enhanced Performance of Perovskite Solar Cells Fabricated in Ambient Air

Xiude Yang

School of Physics and Electronic Science, Zunyi Normal College, Zunyi 563002, P. R. China

Institute for Clean Energy & Advanced Materials (ICEAM), Southwest University, Chongqing 400715, P. R. China

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Debei Liu

Institute for Clean Energy & Advanced Materials (ICEAM), Southwest University, Chongqing 400715, P. R. China

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Ping Li

School of Physics and Electronic Science, Zunyi Normal College, Zunyi 563002, P. R. China

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Bo Wu

School of Physics and Electronic Science, Zunyi Normal College, Zunyi 563002, P. R. China

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Haishen Huang

School of Physics and Electronic Science, Zunyi Normal College, Zunyi 563002, P. R. China

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Tingyan Zhou

School of Physics and Electronic Science, Zunyi Normal College, Zunyi 563002, P. R. China

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, and

Guangdong Zhou

http://orcid.org/0000-0002-0213-5289

Institute for Clean Energy & Advanced Materials (ICEAM), Southwest University, Chongqing 400715, P. R. China

Guizhou Institute of Technology, Guiyang 550003, P. R. China

E-mail Address: gdzhou132@163.com

Corresponding author.

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https://doi.org/10.1142/S1793292018501023Cited by:0 (Source: Crossref)

Abstract

By adopting N, N-Dimethylformamide (DMF) atmosphere annealing at room temperature, planar perovskite solar cells with a p-i-n structure of ITO/PEDOT:PSS/Perovskite/PCBM/C $_{60}$ $_{60}$ /Al are fabricated by a simple one-step solution process in ambient air with humidity around 50%, and the influence of DMF atmosphere on perovskite solar cells (PSCs) is systematically investigated. Compared to the reference device without DMF reaction, the perovskite films treated by modest DMF annealing show a better distribution and a higher densification, and thus the power conversion efficiency (PCE), short circuit current density ( $J_{sc})$ $J_{sc})$ and fill factor (FF) are increased by about 17%, 8% and 6%, respectively. This work displays the importance of solvent annealing for perovskite film prepared by the one-step spin-coating method, and possibly provides a simple and cost-effective way to efficiently fabricate PSCs in ambient air.

Keywords:

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