Bidirectional passivation of the SnO2/perovskite interface in perovskite solar cells through organic salt 3-Hydroxytyramine hydrochloride

Hengda Yao; Yinyan Xu; Mengjie Dai; Lun Zhang; Pujun Niu; Ziying Wen; Mei Lyu; Jun Zhu

Chemistry of Inorganic Materials (Dec 2023)

Bidirectional passivation of the SnO2/perovskite interface in perovskite solar cells through organic salt 3-Hydroxytyramine hydrochloride

Hengda Yao,
Yinyan Xu,
Mengjie Dai,
Lun Zhang,
Pujun Niu,
Ziying Wen,
Mei Lyu,
Jun Zhu

Affiliations

Hengda Yao: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
Yinyan Xu: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
Mengjie Dai: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
Lun Zhang: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
Pujun Niu: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
Ziying Wen: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
Mei Lyu: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China; Special Display and Imaging Technology Innovation Center of Anhui Province, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, Academy of Opto-Electric Technology, Hefei University of Technology, Hefei, 230009, China; Corresponding author. Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China.
Jun Zhu: Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China; Special Display and Imaging Technology Innovation Center of Anhui Province, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, Academy of Opto-Electric Technology, Hefei University of Technology, Hefei, 230009, China; Corresponding author. Anhui Province Key Laboratory of Advance Functional Materials and Devices, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China.

Journal volume & issue: Vol. 1
p. 100012

Abstract

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SnO2 offers compelling advantages as an excellent electron transport layer material in perovskite solar cells. However, the defects caused by oxygen vacancies are unfavorable to the interface contact and would hinder the device performance. A simple and effective interface passivation strategy using 3-Hydroxytyramine hydrochloride (3-Hh) is developed, which realizes the bidirectional passivation of electron transport layer and perovskite. The passivation mechanism of 3-Hh is investigated. Further, the morphology of the subsequent deposited perovskite film is improved. The modified perovskite film exhibits increased grain size with better uniformity, reduced grain boundaries, lowered defect density. A relatively higher power conversion efficiency of 22.63% is achieved for the perovskite solar cells based on the bidirectional passivation of SnO2/perovskite interface. Meanwhile, the modified devices can retain 80% and 82% of the initial efficiency after storage for 1400 h in air and 700 h in 85 °C, respectively. The results show that 3-Hh could be a promising multifunctional interface material to further enhance the efficiency and the stability of perovskite solar cells.

Published in Chemistry of Inorganic Materials

ISSN: 2949-7469 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry: Inorganic chemistry
Website: https://www.sciencedirect.com/journal/chemistry-of-inorganic-materials

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