Oriented Perovskite Crystal towards Efficient Charge Transport in FASnI3 Perovskite Solar Cells

Wenwen Gu; Xin Xu; Junwen Chen; Ben Ma; Minchao Qin; Wenjing Zhu; Jie Qian; Zhaotong Qin; Wei Shen; Yao Lu; Wenzhu Zhang; Shufen Chen; Xinhui Lu; Wei Huang

doi:10.1002/solr.202000153

Oriented Perovskite Crystal towards Efficient Charge Transport in FASnI₃ Perovskite Solar Cells

Wenwen Gu, Xin Xu, Junwen Chen, Ben Ma, Minchao Qin, Wenjing Zhu, Jie Qian, Zhaotong Qin, Wei Shen, Yao Lu, Wenzhu Zhang, Shufen Chen, Xinhui Lu, Wei Huang

Institute of Flexible Electronics

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

30 Scopus citations

Abstract

Despite a higher power conversion efficiency (PCE) than other lead-free perovskite solar cells (PSCs) due to intrinsically excellent optoelectronic properties and suitable bandgaps of tin (Sn) perovskites, Sn-based PSCs still suffer from issues of stability and efficiency for practical applications. Herein, a novel strategy of tuning perovskite crystal orientation toward ≈45° with respect to the substrate by doping 2,3-diaminopropionic acid monohydrochloride (2,3-DAPAC) into formamidinium tin iodide (FASnI₃) is proposed, which facilitates charge transport in the perovskite film and consequent device performances. In addition, the incorporation of 2,3-DAPAC into FASnI₃ enables dense and smooth high-quality perovskite films with less Sn vacancies. Applications of the 2,3-DAPAC-treated FASnI₃ films into PSCs acquire a champion PCE of 7.23%, showing 37.2% enhancement compared with 5.27% of the control device. Moreover, the storage stabilities of both perovskite films and PSCs are significantly prolonged with improved film quality.

Original language	English
Article number	2000153
Journal	Solar RRL
Volume	4
Issue number	10
DOIs	https://doi.org/10.1002/solr.202000153
State	Published - 1 Oct 2020

Keywords

FASnI
charge transport
lead free
orientations
perovskite solar cells

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10.1002/solr.202000153

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title = "Oriented Perovskite Crystal towards Efficient Charge Transport in FASnI3 Perovskite Solar Cells",

abstract = "Despite a higher power conversion efficiency (PCE) than other lead-free perovskite solar cells (PSCs) due to intrinsically excellent optoelectronic properties and suitable bandgaps of tin (Sn) perovskites, Sn-based PSCs still suffer from issues of stability and efficiency for practical applications. Herein, a novel strategy of tuning perovskite crystal orientation toward ≈45° with respect to the substrate by doping 2,3-diaminopropionic acid monohydrochloride (2,3-DAPAC) into formamidinium tin iodide (FASnI3) is proposed, which facilitates charge transport in the perovskite film and consequent device performances. In addition, the incorporation of 2,3-DAPAC into FASnI3 enables dense and smooth high-quality perovskite films with less Sn vacancies. Applications of the 2,3-DAPAC-treated FASnI3 films into PSCs acquire a champion PCE of 7.23%, showing 37.2% enhancement compared with 5.27% of the control device. Moreover, the storage stabilities of both perovskite films and PSCs are significantly prolonged with improved film quality.",

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author = "Wenwen Gu and Xin Xu and Junwen Chen and Ben Ma and Minchao Qin and Wenjing Zhu and Jie Qian and Zhaotong Qin and Wei Shen and Yao Lu and Wenzhu Zhang and Shufen Chen and Xinhui Lu and Wei Huang",

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T1 - Oriented Perovskite Crystal towards Efficient Charge Transport in FASnI3 Perovskite Solar Cells

AU - Gu, Wenwen

AU - Xu, Xin

AU - Chen, Junwen

AU - Ma, Ben

AU - Qin, Minchao

AU - Zhu, Wenjing

AU - Qian, Jie

AU - Qin, Zhaotong

AU - Shen, Wei

AU - Lu, Yao

AU - Zhang, Wenzhu

AU - Chen, Shufen

AU - Lu, Xinhui

AU - Huang, Wei

PY - 2020/10/1

Y1 - 2020/10/1

N2 - Despite a higher power conversion efficiency (PCE) than other lead-free perovskite solar cells (PSCs) due to intrinsically excellent optoelectronic properties and suitable bandgaps of tin (Sn) perovskites, Sn-based PSCs still suffer from issues of stability and efficiency for practical applications. Herein, a novel strategy of tuning perovskite crystal orientation toward ≈45° with respect to the substrate by doping 2,3-diaminopropionic acid monohydrochloride (2,3-DAPAC) into formamidinium tin iodide (FASnI3) is proposed, which facilitates charge transport in the perovskite film and consequent device performances. In addition, the incorporation of 2,3-DAPAC into FASnI3 enables dense and smooth high-quality perovskite films with less Sn vacancies. Applications of the 2,3-DAPAC-treated FASnI3 films into PSCs acquire a champion PCE of 7.23%, showing 37.2% enhancement compared with 5.27% of the control device. Moreover, the storage stabilities of both perovskite films and PSCs are significantly prolonged with improved film quality.

AB - Despite a higher power conversion efficiency (PCE) than other lead-free perovskite solar cells (PSCs) due to intrinsically excellent optoelectronic properties and suitable bandgaps of tin (Sn) perovskites, Sn-based PSCs still suffer from issues of stability and efficiency for practical applications. Herein, a novel strategy of tuning perovskite crystal orientation toward ≈45° with respect to the substrate by doping 2,3-diaminopropionic acid monohydrochloride (2,3-DAPAC) into formamidinium tin iodide (FASnI3) is proposed, which facilitates charge transport in the perovskite film and consequent device performances. In addition, the incorporation of 2,3-DAPAC into FASnI3 enables dense and smooth high-quality perovskite films with less Sn vacancies. Applications of the 2,3-DAPAC-treated FASnI3 films into PSCs acquire a champion PCE of 7.23%, showing 37.2% enhancement compared with 5.27% of the control device. Moreover, the storage stabilities of both perovskite films and PSCs are significantly prolonged with improved film quality.

KW - FASnI

KW - charge transport

KW - lead free

KW - orientations

KW - perovskite solar cells

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Oriented Perovskite Crystal towards Efficient Charge Transport in FASnI₃ Perovskite Solar Cells

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