Planar structured perovskite solar cells by hybrid physical chemical vapor deposition with optimized perovskite film thickness

Xiangyang Wei, Yanke Peng, Gaoshan Jing, Tianhong Cui

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The thickness of perovskite absorber layer is a critical parameter to determine a planar structured perovskite solar cell’s performance. By modifying the spin coating speed and PbI2/N,N-dimethylformamide (DMF) solution concentration, the thickness of perovskite absorber layer was optimized to obtain high-performance solar cells. Using a PbI2/DMF solution of 1.3 mol/L, maximum power conversion efficiency (PCE) of a perovskite solar cell is 15.5% with a perovskite film of 413 nm at 5000 rpm, and PCE of 14.3% was also obtained for a solar cell with a perovskite film of 182 nm thick. It is derived that higher concentration of PbI2/DMF will result in better perovskite solar cells. Additionally, these perovskite solar cells are highly uniform. In 14 sets of solar cells, standard deviations of 11 sets of solar cells were less than 0.50% and the smallest standard deviation was 0.25%, which demonstrates the reliability and effectiveness of hybrid physical chemical vapor deposition (HPCVD) method.

Original languageEnglish (US)
Article number052301
JournalJapanese Journal of Applied Physics
Volume57
Issue number5
DOIs
StatePublished - May 2018

Bibliographical note

Funding Information:
This work was financially supported by State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University and the International Science and Technology Cooperation Program of Ministry of Science and Technology of the People’s Republic of China (Grant No. 2013DFA51800).

Publisher Copyright:
© 2018 The Japan Society of Applied Physics.

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