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Issue 7, 2016
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Soft-cover deposition of scaling-up uniform perovskite thin films for high cost-performance solar cells

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Abstract

Low-cost and high energy conversion efficiency are the crucial factors for large scale application of solar cells. In recent years, a promising high cost-performance photovoltaic technology, organometal halide perovskite solar cells (PSCs), has attracted great attention. However, most of the reported high efficiencies were obtained on a small working area of about 0.1 cm2 with the material utilization ratio of only 1% during film deposition, which actually hinders the advancement in future application of PSCs. Here we present the soft-cover deposition (SCD) method where surface wettability, solution viscosity and thermal crystallization are the processing key factors for the deposition of uniform perovskite films with high material utilization ratios. Scaling-up, pinhole-free, large crystal grains and rough-border-free perovskite films were obtained over a large area of 51 cm2, which were processed continuously in ambient air with a significant enhancement in the material utilization ratio up to ∼80%. Highly reproducible power conversion efficiencies up to 17.6% were achieved in unit cells with a working area of 1 cm2, leading to a high overall cost-performance. We believe that the present SCD technology will benefit the low-cost fabrication of highly efficient perovskite solar cells and open up a route for the deposition of other solution processed thin-films.

Graphical abstract: Soft-cover deposition of scaling-up uniform perovskite thin films for high cost-performance solar cells

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Publication details

The article was received on 15 May 2016, accepted on 07 Jun 2016 and first published on 17 Jun 2016


Article type: Communication
DOI: 10.1039/C6EE01411A
Citation: Energy Environ. Sci., 2016,9, 2295-2301

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    Soft-cover deposition of scaling-up uniform perovskite thin films for high cost-performance solar cells

    F. Ye, H. Chen, F. Xie, W. Tang, M. Yin, J. He, E. Bi, Y. Wang, X. Yang and L. Han, Energy Environ. Sci., 2016, 9, 2295
    DOI: 10.1039/C6EE01411A

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