ZnPc/CsPbBr3 QDs collaborative interface modification to improve the performance of CsPbBr3 perovskite solar cells

Li Zou; Xiaoyan Li; Meili Yang; Jiahao Yan; Jiaming Wang; Jiajie Cheng; Jie Xing; Hao Liu; Huiying Hao; Jingjing Dong

doi:10.1016/j.solmat.2022.112157

ZnPc/CsPbBr₃ QDs collaborative interface modification to improve the performance of CsPbBr₃ perovskite solar cells

Li Zou, Xiaoyan Li, Meili Yang, Jiahao Yan, Jiaming Wang, Jiajie Cheng, Jie Xing, Hao Liu, Huiying Hao, Jingjing Dong

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Carbon-based, all-inorganic CsPbBr₃ perovskite solar cells (PSCs) have attracted considerable interests because of their superior environmental stability, simple and low-cost fabrication process. However, the large energy barrier and high defect states at the CsPbBr₃/Carbon interface will cause poor carrier extraction and serious carrier recombination, which further degrade performance of final devices. In this work, we introduce zinc phthalocyanine (ZnPc), CsPbBr₃ quantum dots (QDs), and ZnPc mixed CsPbBr₃ QDs in proper proportion as the CsPbBr₃/carbon interface modification layers of CsPbBr₃ PSCs. It is found that the modification layers, especially the ZnPc mixed CsPbBr₃ QDs modification layer, can passivate trap states, improve interface contact and optimize energy level alignment at the CsPbBr₃/carbon interface, which can further enhance carrier extraction, suppress carrier recombination and improve performance of final devices. By virtue of ZnPc mixed CsPbBr₃ QDs modification, a highest efficiency of 10.20% and long-term stability over 6 months has been achieved.

Original language	English
Article number	112157
Journal	Solar Energy Materials and Solar Cells
Volume	251
DOIs	https://doi.org/10.1016/j.solmat.2022.112157
State	Published - Mar 2023
Externally published	Yes

Funding

This work was supported by the “the Fundamental Research Funds for the Central Universities ” (Grand No. 2652019121 ) and “the National Natural Science Foundation of China ” (Grand No. 11404293 ).

Funders	Funder number
National Natural Science Foundation of China	11404293
Fundamental Research Funds for the Central Universities	2652019121

Keywords

CsPbBr
CsPbBr QDs
Interface modification
Perovskite solar cells
ZnPc

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2022.112157

Cite this

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title = "ZnPc/CsPbBr3 QDs collaborative interface modification to improve the performance of CsPbBr3 perovskite solar cells",

abstract = "Carbon-based, all-inorganic CsPbBr3 perovskite solar cells (PSCs) have attracted considerable interests because of their superior environmental stability, simple and low-cost fabrication process. However, the large energy barrier and high defect states at the CsPbBr3/Carbon interface will cause poor carrier extraction and serious carrier recombination, which further degrade performance of final devices. In this work, we introduce zinc phthalocyanine (ZnPc), CsPbBr3 quantum dots (QDs), and ZnPc mixed CsPbBr3 QDs in proper proportion as the CsPbBr3/carbon interface modification layers of CsPbBr3 PSCs. It is found that the modification layers, especially the ZnPc mixed CsPbBr3 QDs modification layer, can passivate trap states, improve interface contact and optimize energy level alignment at the CsPbBr3/carbon interface, which can further enhance carrier extraction, suppress carrier recombination and improve performance of final devices. By virtue of ZnPc mixed CsPbBr3 QDs modification, a highest efficiency of 10.20% and long-term stability over 6 months has been achieved.",

keywords = "CsPbBr, CsPbBr QDs, Interface modification, Perovskite solar cells, ZnPc",

author = "Li Zou and Xiaoyan Li and Meili Yang and Jiahao Yan and Jiaming Wang and Jiajie Cheng and Jie Xing and Hao Liu and Huiying Hao and Jingjing Dong",

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doi = "10.1016/j.solmat.2022.112157",

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T1 - ZnPc/CsPbBr3 QDs collaborative interface modification to improve the performance of CsPbBr3 perovskite solar cells

AU - Zou, Li

AU - Li, Xiaoyan

AU - Yang, Meili

AU - Yan, Jiahao

AU - Wang, Jiaming

AU - Cheng, Jiajie

AU - Xing, Jie

AU - Liu, Hao

AU - Hao, Huiying

AU - Dong, Jingjing

PY - 2023/3

Y1 - 2023/3

N2 - Carbon-based, all-inorganic CsPbBr3 perovskite solar cells (PSCs) have attracted considerable interests because of their superior environmental stability, simple and low-cost fabrication process. However, the large energy barrier and high defect states at the CsPbBr3/Carbon interface will cause poor carrier extraction and serious carrier recombination, which further degrade performance of final devices. In this work, we introduce zinc phthalocyanine (ZnPc), CsPbBr3 quantum dots (QDs), and ZnPc mixed CsPbBr3 QDs in proper proportion as the CsPbBr3/carbon interface modification layers of CsPbBr3 PSCs. It is found that the modification layers, especially the ZnPc mixed CsPbBr3 QDs modification layer, can passivate trap states, improve interface contact and optimize energy level alignment at the CsPbBr3/carbon interface, which can further enhance carrier extraction, suppress carrier recombination and improve performance of final devices. By virtue of ZnPc mixed CsPbBr3 QDs modification, a highest efficiency of 10.20% and long-term stability over 6 months has been achieved.

AB - Carbon-based, all-inorganic CsPbBr3 perovskite solar cells (PSCs) have attracted considerable interests because of their superior environmental stability, simple and low-cost fabrication process. However, the large energy barrier and high defect states at the CsPbBr3/Carbon interface will cause poor carrier extraction and serious carrier recombination, which further degrade performance of final devices. In this work, we introduce zinc phthalocyanine (ZnPc), CsPbBr3 quantum dots (QDs), and ZnPc mixed CsPbBr3 QDs in proper proportion as the CsPbBr3/carbon interface modification layers of CsPbBr3 PSCs. It is found that the modification layers, especially the ZnPc mixed CsPbBr3 QDs modification layer, can passivate trap states, improve interface contact and optimize energy level alignment at the CsPbBr3/carbon interface, which can further enhance carrier extraction, suppress carrier recombination and improve performance of final devices. By virtue of ZnPc mixed CsPbBr3 QDs modification, a highest efficiency of 10.20% and long-term stability over 6 months has been achieved.

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KW - CsPbBr QDs

KW - Interface modification

KW - Perovskite solar cells

KW - ZnPc

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