Regulating the Crystallization Kinetics and Lattice Strain of Lead-Free Perovskites with Perovskite Quantum Dots

Minchao Qin; Yuhao Li; Yingguo Yang; Pok Fung Chan; Shiang Li; Zhaotong Qin; Xuyun Guo; Lei Shu; Ye Zhu; Zhiyong Fan; Chun Jen Su; Xinhui Lu

doi:10.1021/acsenergylett.2c01692

Regulating the Crystallization Kinetics and Lattice Strain of Lead-Free Perovskites with Perovskite Quantum Dots

Minchao Qin
, Yuhao Li
, Yingguo Yang
, Pok Fung Chan
, Shiang Li
, Zhaotong Qin
, Xuyun Guo
, Lei Shu
, Ye Zhu
, Zhiyong Fan
, Chun Jen Su
, Xinhui Lu

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

36 Citations (Scopus)

Abstract

The growth of high-quality tin-based perovskite films remains a grand challenge due to uncontrollable crystallization kinetics. Here, we report a facile strategy to realize an epitaxial-like growth of highly oriented tin-based perovskite films with the assistance of perovskite quantum dots (PQDs). Synchrotron-based in situ X-ray scattering results reveal that PQDs can act as nucleation centers to promote the growth of highly oriented perovskite crystals for both FASnI3 and MASnI3 systems. Remarkably, the degree of lattice strain can be readily modulated by tuning the lattice mismatch between various PQDs and bulk perovskites, thus reducing defect density and improving efficiencies. The efficiency of MASnI3 PSCs with PQDs has been pushed to 12.49%, which is the highest of this type reported so far. Furthermore, the film and device stability are enhanced owing to the improved film quality and the protection of hydrophobic ligands from PQDs.

Original language	English
Pages (from-to)	3251-3259
Number of pages	9
Journal	ACS Energy Letters
Volume	7
Issue number	10
DOIs	https://doi.org/10.1021/acsenergylett.2c01692
Publication status	Published - 6 Sept 2022

UN SDGs

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

SDG 7 Affordable and Clean Energy

ASJC Scopus subject areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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10.1021/acsenergylett.2c01692

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title = "Regulating the Crystallization Kinetics and Lattice Strain of Lead-Free Perovskites with Perovskite Quantum Dots",

abstract = "The growth of high-quality tin-based perovskite films remains a grand challenge due to uncontrollable crystallization kinetics. Here, we report a facile strategy to realize an epitaxial-like growth of highly oriented tin-based perovskite films with the assistance of perovskite quantum dots (PQDs). Synchrotron-based in situ X-ray scattering results reveal that PQDs can act as nucleation centers to promote the growth of highly oriented perovskite crystals for both FASnI3 and MASnI3 systems. Remarkably, the degree of lattice strain can be readily modulated by tuning the lattice mismatch between various PQDs and bulk perovskites, thus reducing defect density and improving efficiencies. The efficiency of MASnI3 PSCs with PQDs has been pushed to 12.49\%, which is the highest of this type reported so far. Furthermore, the film and device stability are enhanced owing to the improved film quality and the protection of hydrophobic ligands from PQDs.",

author = "Minchao Qin and Yuhao Li and Yingguo Yang and Chan, \{Pok Fung\} and Shiang Li and Zhaotong Qin and Xuyun Guo and Lei Shu and Ye Zhu and Zhiyong Fan and Su, \{Chun Jen\} and Xinhui Lu",

note = "Funding Information: We are grateful for the beam time and technical support provided at 23A SWAXS beamline and BL09A2 U5 beamline at the National Synchrotron Radiation Research Center (NSRRC), Hsinchu and beamline BL17B1 in Shanghai Synchrotron Radiation Facility (SSRF). X.L. acknowledges financial support from the National Natural Science Foundation of China (No. 52122004), Research Grant Council (RGC) of Hong Kong (No. 14305721), and CUHK PIEF and CRIMS Grant (No. 3133288). Y.Z. thanks the Hong Kong RGC (No. 15305020) and Hong Kong Polytechnic University (No. ZVRP) for financial support. Publisher Copyright: {\textcopyright} 2022 American Chemical Society.",

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AU - Qin, Minchao

AU - Li, Yuhao

AU - Yang, Yingguo

AU - Chan, Pok Fung

AU - Li, Shiang

AU - Qin, Zhaotong

AU - Guo, Xuyun

AU - Shu, Lei

AU - Zhu, Ye

AU - Fan, Zhiyong

AU - Su, Chun Jen

AU - Lu, Xinhui

N1 - Funding Information: We are grateful for the beam time and technical support provided at 23A SWAXS beamline and BL09A2 U5 beamline at the National Synchrotron Radiation Research Center (NSRRC), Hsinchu and beamline BL17B1 in Shanghai Synchrotron Radiation Facility (SSRF). X.L. acknowledges financial support from the National Natural Science Foundation of China (No. 52122004), Research Grant Council (RGC) of Hong Kong (No. 14305721), and CUHK PIEF and CRIMS Grant (No. 3133288). Y.Z. thanks the Hong Kong RGC (No. 15305020) and Hong Kong Polytechnic University (No. ZVRP) for financial support. Publisher Copyright: © 2022 American Chemical Society.

PY - 2022/9/6

Y1 - 2022/9/6

N2 - The growth of high-quality tin-based perovskite films remains a grand challenge due to uncontrollable crystallization kinetics. Here, we report a facile strategy to realize an epitaxial-like growth of highly oriented tin-based perovskite films with the assistance of perovskite quantum dots (PQDs). Synchrotron-based in situ X-ray scattering results reveal that PQDs can act as nucleation centers to promote the growth of highly oriented perovskite crystals for both FASnI3 and MASnI3 systems. Remarkably, the degree of lattice strain can be readily modulated by tuning the lattice mismatch between various PQDs and bulk perovskites, thus reducing defect density and improving efficiencies. The efficiency of MASnI3 PSCs with PQDs has been pushed to 12.49%, which is the highest of this type reported so far. Furthermore, the film and device stability are enhanced owing to the improved film quality and the protection of hydrophobic ligands from PQDs.

AB - The growth of high-quality tin-based perovskite films remains a grand challenge due to uncontrollable crystallization kinetics. Here, we report a facile strategy to realize an epitaxial-like growth of highly oriented tin-based perovskite films with the assistance of perovskite quantum dots (PQDs). Synchrotron-based in situ X-ray scattering results reveal that PQDs can act as nucleation centers to promote the growth of highly oriented perovskite crystals for both FASnI3 and MASnI3 systems. Remarkably, the degree of lattice strain can be readily modulated by tuning the lattice mismatch between various PQDs and bulk perovskites, thus reducing defect density and improving efficiencies. The efficiency of MASnI3 PSCs with PQDs has been pushed to 12.49%, which is the highest of this type reported so far. Furthermore, the film and device stability are enhanced owing to the improved film quality and the protection of hydrophobic ligands from PQDs.

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Regulating the Crystallization Kinetics and Lattice Strain of Lead-Free Perovskites with Perovskite Quantum Dots

Abstract

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