Regulated Crystallization of FASnI3Films through Seeded Growth Process for Efficient Tin Perovskite Solar Cells

Kun Cao; Yangfeng Cheng; Junwen Chen; Yue Huang; Mengru Ge; Jie Qian; Lihui Liu; Jing Feng; Shufen Chen; Wei Huang

doi:10.1021/acsami.0c11253

Regulated Crystallization of FASnI₃Films through Seeded Growth Process for Efficient Tin Perovskite Solar Cells

Kun Cao, Yangfeng Cheng, Junwen Chen, Yue Huang, Mengru Ge, Jie Qian, Lihui Liu, Jing Feng, Shufen Chen, Wei Huang

Institute of Flexible Electronics

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

35 Scopus citations

Abstract

Although rapid progress has been made in tin-based perovskite solar cells (PSCs), the inferior film qualities of the solution-processed perovskites always lead to poor reproducibility and instability. Herein, we present a simple seeded growth (SG) approach to obtain high-quality tin-based perovskite films with preferred crystal orientation, large grain sizes, and fewer apparent grain boundaries. High-quality tin-based perovskite films fabricated through this SG process could greatly reduce the nonradiative recombination centers and inhibit the oxidation of Sn2+. Using formamidinium tin tri-iodide (FASnI3) perovskites, the SG-PSCs exhibit a much improved efficiency from 5.37% (control) to 7.32% with all improved photovoltaic parameters. Moreover, this SG strategy is easily applicable to other tin-based perovskite compositions. The PSC based on methylammonium (MA) doped mixed-cation perovskite (FA0.75MA0.25SnI3) exhibited a power conversion efficiency (PCE) of 8.54% with an improvement of 19.3% in the photovoltaic performance, making it a general approach for achieving efficient tin-based PSCs.

Original language	English
Pages (from-to)	41454-41463
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	12
Issue number	37
DOIs	https://doi.org/10.1021/acsami.0c11253
State	Published - 16 Sep 2020

Keywords

crystallization
lead-free
perovskite solar cells
seeded growth
tin-based

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

Access to Document

10.1021/acsami.0c11253

Cite this

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title = "Regulated Crystallization of FASnI3Films through Seeded Growth Process for Efficient Tin Perovskite Solar Cells",

abstract = "Although rapid progress has been made in tin-based perovskite solar cells (PSCs), the inferior film qualities of the solution-processed perovskites always lead to poor reproducibility and instability. Herein, we present a simple seeded growth (SG) approach to obtain high-quality tin-based perovskite films with preferred crystal orientation, large grain sizes, and fewer apparent grain boundaries. High-quality tin-based perovskite films fabricated through this SG process could greatly reduce the nonradiative recombination centers and inhibit the oxidation of Sn2+. Using formamidinium tin tri-iodide (FASnI3) perovskites, the SG-PSCs exhibit a much improved efficiency from 5.37% (control) to 7.32% with all improved photovoltaic parameters. Moreover, this SG strategy is easily applicable to other tin-based perovskite compositions. The PSC based on methylammonium (MA) doped mixed-cation perovskite (FA0.75MA0.25SnI3) exhibited a power conversion efficiency (PCE) of 8.54% with an improvement of 19.3% in the photovoltaic performance, making it a general approach for achieving efficient tin-based PSCs.",

keywords = "crystallization, lead-free, perovskite solar cells, seeded growth, tin-based",

author = "Kun Cao and Yangfeng Cheng and Junwen Chen and Yue Huang and Mengru Ge and Jie Qian and Lihui Liu and Jing Feng and Shufen Chen and Wei Huang",

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T1 - Regulated Crystallization of FASnI3Films through Seeded Growth Process for Efficient Tin Perovskite Solar Cells

AU - Cao, Kun

AU - Cheng, Yangfeng

AU - Chen, Junwen

AU - Huang, Yue

AU - Ge, Mengru

AU - Qian, Jie

AU - Liu, Lihui

AU - Feng, Jing

AU - Chen, Shufen

AU - Huang, Wei

PY - 2020/9/16

Y1 - 2020/9/16

N2 - Although rapid progress has been made in tin-based perovskite solar cells (PSCs), the inferior film qualities of the solution-processed perovskites always lead to poor reproducibility and instability. Herein, we present a simple seeded growth (SG) approach to obtain high-quality tin-based perovskite films with preferred crystal orientation, large grain sizes, and fewer apparent grain boundaries. High-quality tin-based perovskite films fabricated through this SG process could greatly reduce the nonradiative recombination centers and inhibit the oxidation of Sn2+. Using formamidinium tin tri-iodide (FASnI3) perovskites, the SG-PSCs exhibit a much improved efficiency from 5.37% (control) to 7.32% with all improved photovoltaic parameters. Moreover, this SG strategy is easily applicable to other tin-based perovskite compositions. The PSC based on methylammonium (MA) doped mixed-cation perovskite (FA0.75MA0.25SnI3) exhibited a power conversion efficiency (PCE) of 8.54% with an improvement of 19.3% in the photovoltaic performance, making it a general approach for achieving efficient tin-based PSCs.

AB - Although rapid progress has been made in tin-based perovskite solar cells (PSCs), the inferior film qualities of the solution-processed perovskites always lead to poor reproducibility and instability. Herein, we present a simple seeded growth (SG) approach to obtain high-quality tin-based perovskite films with preferred crystal orientation, large grain sizes, and fewer apparent grain boundaries. High-quality tin-based perovskite films fabricated through this SG process could greatly reduce the nonradiative recombination centers and inhibit the oxidation of Sn2+. Using formamidinium tin tri-iodide (FASnI3) perovskites, the SG-PSCs exhibit a much improved efficiency from 5.37% (control) to 7.32% with all improved photovoltaic parameters. Moreover, this SG strategy is easily applicable to other tin-based perovskite compositions. The PSC based on methylammonium (MA) doped mixed-cation perovskite (FA0.75MA0.25SnI3) exhibited a power conversion efficiency (PCE) of 8.54% with an improvement of 19.3% in the photovoltaic performance, making it a general approach for achieving efficient tin-based PSCs.

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