Efficiency enhancement of Cs0.1(CH3NH3)0.9PbI3 perovskite solar cell by surface passivation using iso-butyl ammonium iodide

Wakul Bumrungsan; Kritsada Hongsith; Vasan Yarangsi; Pisith Kumnorkeaw; Sukrit Sucharitakul; Surachet Phaduangdhitidhada; Supab Choopun

doi:10.1007/s12613-021-2382-3

Volume 29 Issue 11

Nov. 2022

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2022 > 29(11): 1963-1970

Wakul Bumrungsan, Kritsada Hongsith, Vasan Yarangsi, Pisith Kumnorkeaw, Sukrit Sucharitakul, Surachet Phaduangdhitidhada, and Supab Choopun, Efficiency enhancement of Cs_0.1(CH₃NH₃)_0.9PbI₃ perovskite solar cell by surface passivation using iso-butyl ammonium iodide, Int. J. Miner. Metall. Mater., 29(2022), No. 11, pp. 1963-1970. https://doi.org/10.1007/s12613-021-2382-3

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Wakul Bumrungsan, Kritsada Hongsith, Vasan Yarangsi, Pisith Kumnorkeaw, Sukrit Sucharitakul, Surachet Phaduangdhitidhada, and Supab Choopun, Efficiency enhancement of Cs0.1(CH3NH3)0.9PbI3 perovskite solar cell by surface passivation using iso-butyl ammonium iodide, Int. J. Miner. Metall. Mater., 29(2022), No. 11, pp. 1963-1970. https://doi.org/10.1007/s12613-021-2382-3

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Research Article

Efficiency enhancement of Cs_0.1(CH₃NH₃)_0.9PbI₃ perovskite solar cell by surface passivation using iso-butyl ammonium iodide

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Corresponding author:
Supab Choopun E-mail: supab99@gmail.com
Received: 30 April 2021; Revised: 16 November 2021; Accepted: 17 November 2021; Available online: 19 November 2021

Abstract

Abstract

Efficiency enhancement of Cs_0.1(CH₃NH₃)_0.9PbI₃ solar cell devices was performed by using iso-butyl ammonium iodide (IBA) passivated on Cs_0.1(CH₃NH₃)_0.9PbI₃ films. The n–i–p structure of perovskite solar cell devices was fabricated with the structure of FTO/SnO₂/Cs_0.1(CH₃NH₃)_0.9PbI₃ (FTO, i.e., fluorine doped tin oxide) and IBA/Spiro-OMeTAD/Ag. The effect of different weights of IBA passivated on Cs-doped perovskite solar cells (PSCs) was systematically investigated and compared with non-passivated devices. It was found that the 5-mg IBA-passivated devices exhibited a high power conversion efficiency (PCE) of 15.49% higher than 12.64% of non-IBA-passivated devices. The improvement of photovoltaic parameters of the 5-mg IBA-passivated device can be clearly observed compared to the Cs-doped device. The better performance of the IBA-passivated device can be confirmed by the reduction of PbI₂ phase in the crystal structure, lower charge recombination rate, lower charge transfer resistance, and improved contact angle of perovskite films. Therefore, IBA passivation on Cs_0.1(CH₃NH)_0.9PbI₃ is a promising technique to improve the efficiency of Cs-doped perovskite solar cells.
- perovskite solar cell;
- power conversion efficiency;
- surface passivation;
- cesium methylammonium lead iodide;
- iso-butyl ammonium iodide

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