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Issue 40, 2018
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A computational approach to interface engineering of lead-free CH3NH3SnI3 highly-efficient perovskite solar cells

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Abstract

Perovskite solar cells (PSCs) based on organic–inorganic metal halide perovskites are a recent ground-breaking advancement in attaining power conversion efficiencies exceeding 21%. However, the toxicity of lead in these PSCs could be a deterrent for large-scale development due to the environmental concerns. The methylammonium tin triiodide (CH3NH3SnI3) perovskite has been successfully employed in lead-free PSCs as an alternative to CH3NH3PbI3 perovskite. The PSCs have mostly been realized with a highly expensive spiro-OMeTAD hole-transporting material (HTM). Herein, copper thiocyanate (CuSCN) was implemented as a HTM instead of the highly expensive spiro-OMeTAD counterpart. The results show that CuSCN is a promising HTM for the lead-free CH3NH3SnI3-based PSCs. We investigated and optimized the parameters of the lead-free CH3NH3SnI3-based PSCs with the CuSCN HTM. The simulated device shows a power conversion efficiency exceeding 26% under AM 1.5G illumination and an absorption onset up to 1080 nm. The reported CH3NH3SnI3-based PSCs provide a viable path to the realization of environmentally benign, low-cost, and high-efficiency PSCs.

Graphical abstract: A computational approach to interface engineering of lead-free CH3NH3SnI3 highly-efficient perovskite solar cells

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Publication details

The article was received on 10 Jun 2018, accepted on 09 Sep 2018 and first published on 10 Sep 2018


Article type: Paper
DOI: 10.1039/C8CP03660H
Citation: Phys. Chem. Chem. Phys., 2018,20, 25683-25692
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    A computational approach to interface engineering of lead-free CH3NH3SnI3 highly-efficient perovskite solar cells

    M. Lazemi, S. Asgharizadeh and S. Bellucci, Phys. Chem. Chem. Phys., 2018, 20, 25683
    DOI: 10.1039/C8CP03660H

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