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Effect of Ionic Liquid Methylammonium Acetate on the Performance of Hole-Transport Material-Free Mesoporous Perovskite Solar Cells with Carbon Electrode

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Abstract

One effective way of improving the performance of perovskite solar cells (PSCs) is using ionic liquids to control the crystal growth of the perovskite. In this work, the effect of the ionic liquid methylammonium acetate (MAAc) on the perovskite crystal growth and the power conversion efficiency (PCE) of hole-transport material-free PSCs with carbon electrodes were observed. We found that, when perovskite was produced from a reaction of dimethylammonium lead iodide (DMAPbI3) with methylamine, the addition of ionic liquid to the DMAPbI3 precursor solution causes the crystallitic size of the resulting perovskite to increase, improving the crystallinity and light absorbability of the perovskite film. The PCE of the device fabricated by adding 5% MAAc to the DMAPbI3 precursor solution was 14.82%, which was 1.26-fold improved as compared to the control (11.74%). The result of our analysis showed that the PCE of the device was increased by the addition of ionic liquid, due to reduction of the nonradiative recombination and enlargement of the charge recombination resistance.

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Acknowledgments

This work was supported by the state project of DPR Korea ‘‘Development of the Perovskite Solar Cell’’ (No. 2018-03).

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  1. Laboratory of Biophysics, Institute of Molecular Biology, Faculty of Life Science, KIM IL SUNG University, Ryongnam-Dong, Taesong District, Pyongyang, 850, Democratic People’s Republic of Korea

    Yu-Hyon Jong, Pyol Kim, Kwon-Il Ryu, Kyong-Su Sonu, Jin-Hyok Ri & Chol-Il So

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Jong, YH., Kim, P., Ryu, KI. et al. Effect of Ionic Liquid Methylammonium Acetate on the Performance of Hole-Transport Material-Free Mesoporous Perovskite Solar Cells with Carbon Electrode. J. Electron. Mater. 51, 7085–7091 (2022). https://doi.org/10.1007/s11664-022-09944-6

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