Properties of FAPbI3-Based Alloy Perovskite Thin Films and Their Application in Solar Cells

Chia Lung Tsai; S. N. Manjunatha; Sheng Hsiung Chang; Ming Jer Jeng; Liann Be Chang; Chun Huan Chang; Mukta Sharma; Chi Tsu Yuan

doi:10.3390/pr11051450

Properties of FAPbI₃-Based Alloy Perovskite Thin Films and Their Application in Solar Cells

Chia Lung Tsai^*
, S. N. Manjunatha
, Sheng Hsiung Chang^*
, Ming Jer Jeng
, Liann Be Chang
, Chun Huan Chang
, Mukta Sharma
, Chi Tsu Yuan

^*Corresponding author for this work

Chang Gung University
Chung Yuan Christian University

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

5 Scopus citations

Abstract

Surface morphologies, light harvesting abilities, crystal structures, and excitonic properties of the formamiminium lead triiodide (FAPbI₃) based alloy perovskite thin films were investigated by using the scanning electron microscopic images, absorbance spectra, X-ray diffraction patterns, photoluminescence (PL) spectra and time-resolved PL decaying curves. Our experimental results show that the fresh Cs_xFA_1−xPbI₃, Rb_xFA_1−xPbI₃, and FAPb(SCN_xI_1−x)₃ alloy thin films are a pure α-phase perovskite crystal, a α-phase: δ-phase mixed perovskite crystal, and a PbI₂ crystal/α-phase: δ-phase mixed perovskite crystal at room temperatures, respectively. Among the three FAPbI₃ based alloy perovskite solar cells, the Cs_xFA_1−xPbI₃ solar cells have the better photovoltaic responses. It is noted that the high photocurrent density is mainly due to the formation of cube-like surface morphology and the long carrier lifetime of 368 ns when the Cs_xFA_1−xPbI₃ alloy perovskite thin film is used as the light-absorbing layer. Our findings provide the relation between the properties of the FAPbI₃ based alloy perovskite thin films and the photovoltaic responses of the resultant solar cells.

Original language	English
Article number	1450
Journal	Processes
Volume	11
Issue number	5
DOIs	https://doi.org/10.3390/pr11051450
State	Published - 05 2023

Bibliographical note

Publisher Copyright:
© 2023 by the authors.

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Keywords

CsFAPbI alloy perovskite thin film
one-step deposition
photovoltaic responses

Access to Document

10.3390/pr11051450

Cite this

@article{192b6d0ea0d04be4add33f54a25fa3b0,

title = "Properties of FAPbI3-Based Alloy Perovskite Thin Films and Their Application in Solar Cells",

abstract = "Surface morphologies, light harvesting abilities, crystal structures, and excitonic properties of the formamiminium lead triiodide (FAPbI3) based alloy perovskite thin films were investigated by using the scanning electron microscopic images, absorbance spectra, X-ray diffraction patterns, photoluminescence (PL) spectra and time-resolved PL decaying curves. Our experimental results show that the fresh CsxFA1−xPbI3, RbxFA1−xPbI3, and FAPb(SCNxI1−x)3 alloy thin films are a pure α-phase perovskite crystal, a α-phase: δ-phase mixed perovskite crystal, and a PbI2 crystal/α-phase: δ-phase mixed perovskite crystal at room temperatures, respectively. Among the three FAPbI3 based alloy perovskite solar cells, the CsxFA1−xPbI3 solar cells have the better photovoltaic responses. It is noted that the high photocurrent density is mainly due to the formation of cube-like surface morphology and the long carrier lifetime of 368 ns when the CsxFA1−xPbI3 alloy perovskite thin film is used as the light-absorbing layer. Our findings provide the relation between the properties of the FAPbI3 based alloy perovskite thin films and the photovoltaic responses of the resultant solar cells.",

keywords = "CsFAPbI alloy perovskite thin film, one-step deposition, photovoltaic responses",

author = "Tsai, \{Chia Lung\} and Manjunatha, \{S. N.\} and Chang, \{Sheng Hsiung\} and Jeng, \{Ming Jer\} and Chang, \{Liann Be\} and Chang, \{Chun Huan\} and Mukta Sharma and Yuan, \{Chi Tsu\}",

note = "Publisher Copyright: {\textcopyright} 2023 by the authors.",

year = "2023",

month = may,

doi = "10.3390/pr11051450",

language = "英语",

volume = "11",

journal = "Processes",

issn = "2227-9717",

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T1 - Properties of FAPbI3-Based Alloy Perovskite Thin Films and Their Application in Solar Cells

AU - Tsai, Chia Lung

AU - Manjunatha, S. N.

AU - Chang, Sheng Hsiung

AU - Jeng, Ming Jer

AU - Chang, Liann Be

AU - Chang, Chun Huan

AU - Sharma, Mukta

AU - Yuan, Chi Tsu

PY - 2023/5

Y1 - 2023/5

N2 - Surface morphologies, light harvesting abilities, crystal structures, and excitonic properties of the formamiminium lead triiodide (FAPbI3) based alloy perovskite thin films were investigated by using the scanning electron microscopic images, absorbance spectra, X-ray diffraction patterns, photoluminescence (PL) spectra and time-resolved PL decaying curves. Our experimental results show that the fresh CsxFA1−xPbI3, RbxFA1−xPbI3, and FAPb(SCNxI1−x)3 alloy thin films are a pure α-phase perovskite crystal, a α-phase: δ-phase mixed perovskite crystal, and a PbI2 crystal/α-phase: δ-phase mixed perovskite crystal at room temperatures, respectively. Among the three FAPbI3 based alloy perovskite solar cells, the CsxFA1−xPbI3 solar cells have the better photovoltaic responses. It is noted that the high photocurrent density is mainly due to the formation of cube-like surface morphology and the long carrier lifetime of 368 ns when the CsxFA1−xPbI3 alloy perovskite thin film is used as the light-absorbing layer. Our findings provide the relation between the properties of the FAPbI3 based alloy perovskite thin films and the photovoltaic responses of the resultant solar cells.

AB - Surface morphologies, light harvesting abilities, crystal structures, and excitonic properties of the formamiminium lead triiodide (FAPbI3) based alloy perovskite thin films were investigated by using the scanning electron microscopic images, absorbance spectra, X-ray diffraction patterns, photoluminescence (PL) spectra and time-resolved PL decaying curves. Our experimental results show that the fresh CsxFA1−xPbI3, RbxFA1−xPbI3, and FAPb(SCNxI1−x)3 alloy thin films are a pure α-phase perovskite crystal, a α-phase: δ-phase mixed perovskite crystal, and a PbI2 crystal/α-phase: δ-phase mixed perovskite crystal at room temperatures, respectively. Among the three FAPbI3 based alloy perovskite solar cells, the CsxFA1−xPbI3 solar cells have the better photovoltaic responses. It is noted that the high photocurrent density is mainly due to the formation of cube-like surface morphology and the long carrier lifetime of 368 ns when the CsxFA1−xPbI3 alloy perovskite thin film is used as the light-absorbing layer. Our findings provide the relation between the properties of the FAPbI3 based alloy perovskite thin films and the photovoltaic responses of the resultant solar cells.

KW - CsFAPbI alloy perovskite thin film

KW - one-step deposition

KW - photovoltaic responses

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DO - 10.3390/pr11051450

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