Unveiling the guest effect of N-butylammonium iodide towards efficient and stable 2D-3D perovskite solar cells through sequential deposition process

Yafei Wang; Hao Xu; Feng Wang; Detao Liu; Hao Chen; Hualin Zheng; Long Ji; Peng Zhang; Ting Zhang; Zhi David Chen; Jiang Wu; Li Chen; Shibin Li

doi:10.1016/j.cej.2019.123589

Unveiling the guest effect of N-butylammonium iodide towards efficient and stable 2D-3D perovskite solar cells through sequential deposition process

Yafei Wang, Hao Xu, Feng Wang, Detao Liu, Hao Chen, Hualin Zheng, Long Ji, Peng Zhang, Ting Zhang, Zhi David Chen, Jiang Wu, Li Chen, Shibin Li

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

28 Scopus citations

Abstract

Improving the stability of hybrid organic-inorganic halide perovskite materials is urgent and essential for their applications in optoelectronic devices. Here, we introduce n-butylammonium iodide (BAI) into lead-iodide crystals as guest molecules. As a result of guest effect, only a small amount BA₂PbI₄ two-dimensional (2D) perovskite (n = 1) is formed in PbI₂-BAI films. Most of BAI crystals efficiently cut and squeeze the lattice network of lead iodide. The better orientation of 2D lead iodide crystals is obtained via this guest effect. In the following sequential deposition process, that BAI re-dissolve in MAI isopropanol (IPA) solution leads to a mesoporous structure of PbI₂ and introduces a 2D perovskite (n = 2) protect layer in 3D MAPbI₃ after annealing. Finally, the morphology, crystallization and stability of CH₃NH₃PbI₃ are simultaneously improved by the insertion of BAI guest molecules. Consequently, CH₃NH₃PbI₃ PSCs with an optimized cutting behavior exhibited a power conversion efficiency of 18% and significantly improved the stability.

Original language	English
Article number	123589
Journal	Chemical Engineering Journal
Volume	391
DOIs	https://doi.org/10.1016/j.cej.2019.123589
State	Published - Jul 1 2020

Bibliographical note

Funding Information:
This work was supported by National Natural Science Foundation of China under Grant Nos. 61421002 , 61874150 , 61574029 , and 61471085 . This work was supported by 2018 Miaozi Project of Sichuan Science and Technology Innovation. Appendix A

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

2D-3D perovskite
Guest effect
Ion exchange
Lattice compression
Sequential deposition
Stability

ASJC Scopus subject areas

Chemistry (all)
Environmental Chemistry
Chemical Engineering (all)
Industrial and Manufacturing Engineering

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Wang, Y., Xu, H., Wang, F., Liu, D., Chen, H., Zheng, H., Ji, L., Zhang, P., Zhang, T., Chen, Z. D., Wu, J., Chen, L., & Li, S. (2020). Unveiling the guest effect of N-butylammonium iodide towards efficient and stable 2D-3D perovskite solar cells through sequential deposition process. Chemical Engineering Journal, 391, Article 123589. https://doi.org/10.1016/j.cej.2019.123589

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title = "Unveiling the guest effect of N-butylammonium iodide towards efficient and stable 2D-3D perovskite solar cells through sequential deposition process",

abstract = "Improving the stability of hybrid organic-inorganic halide perovskite materials is urgent and essential for their applications in optoelectronic devices. Here, we introduce n-butylammonium iodide (BAI) into lead-iodide crystals as guest molecules. As a result of guest effect, only a small amount BA2PbI4 two-dimensional (2D) perovskite (n = 1) is formed in PbI2-BAI films. Most of BAI crystals efficiently cut and squeeze the lattice network of lead iodide. The better orientation of 2D lead iodide crystals is obtained via this guest effect. In the following sequential deposition process, that BAI re-dissolve in MAI isopropanol (IPA) solution leads to a mesoporous structure of PbI2 and introduces a 2D perovskite (n = 2) protect layer in 3D MAPbI3 after annealing. Finally, the morphology, crystallization and stability of CH3NH3PbI3 are simultaneously improved by the insertion of BAI guest molecules. Consequently, CH3NH3PbI3 PSCs with an optimized cutting behavior exhibited a power conversion efficiency of 18% and significantly improved the stability.",

keywords = "2D-3D perovskite, Guest effect, Ion exchange, Lattice compression, Sequential deposition, Stability",

author = "Yafei Wang and Hao Xu and Feng Wang and Detao Liu and Hao Chen and Hualin Zheng and Long Ji and Peng Zhang and Ting Zhang and Chen, {Zhi David} and Jiang Wu and Li Chen and Shibin Li",

note = "Funding Information: This work was supported by National Natural Science Foundation of China under Grant Nos. 61421002 , 61874150 , 61574029 , and 61471085 . This work was supported by 2018 Miaozi Project of Sichuan Science and Technology Innovation. Appendix A Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

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AU - Wang, Yafei

AU - Xu, Hao

AU - Wang, Feng

AU - Liu, Detao

AU - Chen, Hao

AU - Zheng, Hualin

AU - Ji, Long

AU - Zhang, Peng

AU - Zhang, Ting

AU - Chen, Zhi David

AU - Wu, Jiang

AU - Chen, Li

AU - Li, Shibin

N1 - Funding Information: This work was supported by National Natural Science Foundation of China under Grant Nos. 61421002 , 61874150 , 61574029 , and 61471085 . This work was supported by 2018 Miaozi Project of Sichuan Science and Technology Innovation. Appendix A Publisher Copyright: © 2019 Elsevier B.V.

PY - 2020/7/1

Y1 - 2020/7/1

N2 - Improving the stability of hybrid organic-inorganic halide perovskite materials is urgent and essential for their applications in optoelectronic devices. Here, we introduce n-butylammonium iodide (BAI) into lead-iodide crystals as guest molecules. As a result of guest effect, only a small amount BA2PbI4 two-dimensional (2D) perovskite (n = 1) is formed in PbI2-BAI films. Most of BAI crystals efficiently cut and squeeze the lattice network of lead iodide. The better orientation of 2D lead iodide crystals is obtained via this guest effect. In the following sequential deposition process, that BAI re-dissolve in MAI isopropanol (IPA) solution leads to a mesoporous structure of PbI2 and introduces a 2D perovskite (n = 2) protect layer in 3D MAPbI3 after annealing. Finally, the morphology, crystallization and stability of CH3NH3PbI3 are simultaneously improved by the insertion of BAI guest molecules. Consequently, CH3NH3PbI3 PSCs with an optimized cutting behavior exhibited a power conversion efficiency of 18% and significantly improved the stability.

AB - Improving the stability of hybrid organic-inorganic halide perovskite materials is urgent and essential for their applications in optoelectronic devices. Here, we introduce n-butylammonium iodide (BAI) into lead-iodide crystals as guest molecules. As a result of guest effect, only a small amount BA2PbI4 two-dimensional (2D) perovskite (n = 1) is formed in PbI2-BAI films. Most of BAI crystals efficiently cut and squeeze the lattice network of lead iodide. The better orientation of 2D lead iodide crystals is obtained via this guest effect. In the following sequential deposition process, that BAI re-dissolve in MAI isopropanol (IPA) solution leads to a mesoporous structure of PbI2 and introduces a 2D perovskite (n = 2) protect layer in 3D MAPbI3 after annealing. Finally, the morphology, crystallization and stability of CH3NH3PbI3 are simultaneously improved by the insertion of BAI guest molecules. Consequently, CH3NH3PbI3 PSCs with an optimized cutting behavior exhibited a power conversion efficiency of 18% and significantly improved the stability.

KW - 2D-3D perovskite

KW - Guest effect

KW - Ion exchange

KW - Lattice compression

KW - Sequential deposition

KW - Stability

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Unveiling the guest effect of N-butylammonium iodide towards efficient and stable 2D-3D perovskite solar cells through sequential deposition process

Abstract

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Keywords

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