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ACS Appl Mater Interfaces. 2017 Mar 8;9(9):7879-7884. doi: 10.1021/acsami.6b15095. Epub 2017 Feb 23.

Precise Morphology Control and Continuous Fabrication of Perovskite Solar Cells Using Droplet-Controllable Electrospray Coating System.

Hong SC1,2, Lee G1,2, Ha K2, Yoon J1,2, Ahn N1,2, Cho W2, Park M1,2, Choi M1,2.

Author information

1
Department of Mechanical and Aerospace Engineering, Seoul National University , Seoul 151-742, Republic of Korea.
2
Global Frontier Center for Multiscale Energy Systems, Seoul National University , Seoul 151-744, Republic of Korea.

Abstract

Herein, we developed a novel electrospray coating system for continuous fabrication of perovskite solar cells with high performance. Our system can systemically control the size of CH3NH3PbI3 precursor droplets by modulating the applied electrical potential, shown to be a crucial factor for the formation of perovskite films. As a result, we have obtained pinhole-free and large grain-sized perovskite solar cells, yielding the best PCE of 13.27% with little photocurrent hysteresis. Furthermore, the average PCE through the continuous coating process was 11.56 ± 0.52%. Our system demonstrates not only the high reproducibility but also a new way to commercialize high-quality perovskite solar cells.

KEYWORDS:

continuous; controllable; droplet size; electrospray; perovskite solar cell

PMID:
28217996
DOI:
10.1021/acsami.6b15095

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