2D Intermediate Suppression for Efficient Ruddlesden-Popper (RP) Phase Lead-Free Perovskite Solar Cells

Jian Qiu; Yingdong Xia; Yiting Zheng; Wei Hui; Hao Gu; Wenbo Yuan; Hui Yu; Lingfeng Chao; Tingting Niu; Yingguo Yang; Xingyu Gao; Yonghua Chen; Wei Huang

doi:10.1021/acsenergylett.9b00954

2D Intermediate Suppression for Efficient Ruddlesden-Popper (RP) Phase Lead-Free Perovskite Solar Cells

Jian Qiu, Yingdong Xia, Yiting Zheng, Wei Hui, Hao Gu, Wenbo Yuan, Hui Yu, Lingfeng Chao, Tingting Niu, Yingguo Yang, Xingyu Gao, Yonghua Chen, Wei Huang

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

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

196 Scopus citations

Abstract

2D Ruddlesden-Popper (2DRP) tin (Sn) perovskite solar cells (PSCs) play an irreplaceable role in advancing the commercialization of perovskite-based photovoltaic devices due to their low toxicity and improved stability. However, the efficiency of 2DRP Sn PSCs has not made a breakthrough owing to incompletely oriented crystal growth and poor film morphology, which is limited by a complex and uncontrollable crystallization process. Here, we first introduce the mixed spacer organic cations [n-butylamine (BA) and phenylethylamine (PEA)] in 2DRP Sn perovskite to control the crystallization process. We find that when the BA⁺ and PEA⁺ co-work to form [(BA_0.5PEA_0.5)₂FA₃Sn₄I₁₃] 2DRP perovskites, the intermediate phase impeding the homogeneous and ordered nucleation of the crystal is suppressed effectively, thus enabling a high-quality film morphology and improved crystal orientation. Benefitting from it, the power conversion efficiency (PCE) is improved to 8.82%, which is the highest one among the 2DRP Sn PSCs as far as we known.

Original language	English
Pages (from-to)	1513-1520
Number of pages	8
Journal	ACS Energy Letters
Volume	4
Issue number	7
DOIs	https://doi.org/10.1021/acsenergylett.9b00954
State	Published - 12 Jul 2019

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title = "2D Intermediate Suppression for Efficient Ruddlesden-Popper (RP) Phase Lead-Free Perovskite Solar Cells",

abstract = "2D Ruddlesden-Popper (2DRP) tin (Sn) perovskite solar cells (PSCs) play an irreplaceable role in advancing the commercialization of perovskite-based photovoltaic devices due to their low toxicity and improved stability. However, the efficiency of 2DRP Sn PSCs has not made a breakthrough owing to incompletely oriented crystal growth and poor film morphology, which is limited by a complex and uncontrollable crystallization process. Here, we first introduce the mixed spacer organic cations [n-butylamine (BA) and phenylethylamine (PEA)] in 2DRP Sn perovskite to control the crystallization process. We find that when the BA+ and PEA+ co-work to form [(BA0.5PEA0.5)2FA3Sn4I13] 2DRP perovskites, the intermediate phase impeding the homogeneous and ordered nucleation of the crystal is suppressed effectively, thus enabling a high-quality film morphology and improved crystal orientation. Benefitting from it, the power conversion efficiency (PCE) is improved to 8.82%, which is the highest one among the 2DRP Sn PSCs as far as we known.",

author = "Jian Qiu and Yingdong Xia and Yiting Zheng and Wei Hui and Hao Gu and Wenbo Yuan and Hui Yu and Lingfeng Chao and Tingting Niu and Yingguo Yang and Xingyu Gao and Yonghua Chen and Wei Huang",

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doi = "10.1021/acsenergylett.9b00954",

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T1 - 2D Intermediate Suppression for Efficient Ruddlesden-Popper (RP) Phase Lead-Free Perovskite Solar Cells

AU - Qiu, Jian

AU - Xia, Yingdong

AU - Zheng, Yiting

AU - Hui, Wei

AU - Gu, Hao

AU - Yuan, Wenbo

AU - Yu, Hui

AU - Chao, Lingfeng

AU - Niu, Tingting

AU - Yang, Yingguo

AU - Gao, Xingyu

AU - Chen, Yonghua

AU - Huang, Wei

PY - 2019/7/12

Y1 - 2019/7/12

N2 - 2D Ruddlesden-Popper (2DRP) tin (Sn) perovskite solar cells (PSCs) play an irreplaceable role in advancing the commercialization of perovskite-based photovoltaic devices due to their low toxicity and improved stability. However, the efficiency of 2DRP Sn PSCs has not made a breakthrough owing to incompletely oriented crystal growth and poor film morphology, which is limited by a complex and uncontrollable crystallization process. Here, we first introduce the mixed spacer organic cations [n-butylamine (BA) and phenylethylamine (PEA)] in 2DRP Sn perovskite to control the crystallization process. We find that when the BA+ and PEA+ co-work to form [(BA0.5PEA0.5)2FA3Sn4I13] 2DRP perovskites, the intermediate phase impeding the homogeneous and ordered nucleation of the crystal is suppressed effectively, thus enabling a high-quality film morphology and improved crystal orientation. Benefitting from it, the power conversion efficiency (PCE) is improved to 8.82%, which is the highest one among the 2DRP Sn PSCs as far as we known.

AB - 2D Ruddlesden-Popper (2DRP) tin (Sn) perovskite solar cells (PSCs) play an irreplaceable role in advancing the commercialization of perovskite-based photovoltaic devices due to their low toxicity and improved stability. However, the efficiency of 2DRP Sn PSCs has not made a breakthrough owing to incompletely oriented crystal growth and poor film morphology, which is limited by a complex and uncontrollable crystallization process. Here, we first introduce the mixed spacer organic cations [n-butylamine (BA) and phenylethylamine (PEA)] in 2DRP Sn perovskite to control the crystallization process. We find that when the BA+ and PEA+ co-work to form [(BA0.5PEA0.5)2FA3Sn4I13] 2DRP perovskites, the intermediate phase impeding the homogeneous and ordered nucleation of the crystal is suppressed effectively, thus enabling a high-quality film morphology and improved crystal orientation. Benefitting from it, the power conversion efficiency (PCE) is improved to 8.82%, which is the highest one among the 2DRP Sn PSCs as far as we known.

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2D Intermediate Suppression for Efficient Ruddlesden-Popper (RP) Phase Lead-Free Perovskite Solar Cells

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