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Issue 28, 2017
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Highly stable perovskite solar cells in humid and hot environment

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Abstract

An organic–inorganic perovskite solar cell (PSC) is a very promising candidate for a next-generation photovoltaic system. For the last three years, the power conversion efficiency (PCE) of PSCs has been dramatically improved from 9.7% to 22.1%; however, a poor long-term stability still limits the commercialization of PSCs. In this study, we explore the effect of poly(methyl methacrylate) (PMMA)/reduced graphene oxide (rGO) composite (PRC) passivation layer on the chemical and thermal stability of PSCs. The PRC passivation layer shows superior protection performance due to improved hydrophobicity and increased complexity of the O2 or H2O diffusion pathway. Moreover, the excellent thermal conductivity of rGO facilitates heat dissipation through the PRC layer. When the PRC layer is coated, the aging of PSCs is significantly prevented even under extreme conditions of humidity (>75%) and temperature (∼85 °C). Consequently, the PCE of PRC-passivated PSCs exhibits a negligible change in air, temperature of 35 °C, and humidity of 40% for 1000 h. Our study offers a simple and robust way to fabricate long-term stable and highly efficient PSCs, thus providing a path to PSC commercialization.

Graphical abstract: Highly stable perovskite solar cells in humid and hot environment

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Publication details

The article was received on 05 May 2017, accepted on 05 Jun 2017 and first published on 05 Jun 2017


Article type: Paper
DOI: 10.1039/C7TA03881J
Citation: J. Mater. Chem. A, 2017,5, 14733-14740
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    Highly stable perovskite solar cells in humid and hot environment

    G. S. Han, J. S. Yoo, F. Yu, M. L. Duff, B. K. Kang and J. Lee, J. Mater. Chem. A, 2017, 5, 14733
    DOI: 10.1039/C7TA03881J

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