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Issue 41, 2018
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Metallic tin substitution of organic lead perovskite films for efficient solar cells

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Abstract

Perovskite solar cells are promising highly efficient and low-cost photovoltaic devices. Nevertheless, the use of the toxic element Pb is still a big challenge for the mass production of highly efficient perovskite solar cells. In this work, a novel and facile technique is presented to fabricate tin-lead alloyed perovskite films using metal precursors and a substitution method. Herein, the perovskite films are formed as a result of the substitution reaction between the Sn metal precursor and methylammonium triiodideplumbate (CH3NH3PbI3, MAPbI3) solution carried out at 70 °C. The maximum Sn content in perovskite films reaches up to 15% with a substitution reaction time period of 1 day. Through this substitution technique and the unique growth mechanism, a less-toxic and efficient perovskite solar cell with a power conversion efficiency (PCE) of 12.46% is fabricated. It is found that this substituting strategy can exploit a new direction to further explore different active metals substituting less active organic metallic systems with even lower temperature conditions.

Graphical abstract: Metallic tin substitution of organic lead perovskite films for efficient solar cells

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Publication details

The article was received on 04 Jun 2018, accepted on 19 Sep 2018 and first published on 25 Sep 2018


Article type: Paper
DOI: 10.1039/C8TA05282D
Citation: J. Mater. Chem. A, 2018,6, 20224-20232

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    Metallic tin substitution of organic lead perovskite films for efficient solar cells

    J. Zhao, L. Wei, C. Jia, H. Tang, X. Su, Y. Ou, Z. Liu, C. Wang, X. Zhao, H. Jin, P. Wang, G. Yu, G. Zhang and J. Liu, J. Mater. Chem. A, 2018, 6, 20224
    DOI: 10.1039/C8TA05282D

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