Effect of Zinc-doping on the Reduction of the Hot-carrier Cooling Rate in Halide Perovskites

Guichuan Xing; Qi WEI; Jun Yin; Osman Bakr; Ze Wang; Chenhao Wang; Omar F. Mohammed; Mingjie Li

doi:10.1002/ange.202100099

Effect of Zinc-doping on the Reduction of the Hot-carrier Cooling Rate in Halide Perovskites

Guichuan Xing, Qi WEI, Jun Yin, Osman Bakr, Ze Wang, Chenhao Wang, Omar F. Mohammed, Mingjie Li

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

62 Scopus citations

Abstract

Fast hot-carrier cooling process in the solar-absorbers fundamentally limits the photon-energy conversion efficiencies. It is highly desirable to develop the solar absorber with long-lived hot-carriers at sun-illumination level, which can be used to develop the hot-carrier solar cells with enhanced efficiency. Herein, we reveal that zinc-doped (0.34%) halide perovskites have the slower hot-carrier cooling compared with the pristine sample through the transient absorption spectroscopy measurements and theoretical calculations. The hot-carrier energy loss rate at the low photoexcitation level of 10 17 cm -3 is found to be ~3 times smaller than that of un-doped perovskites for 500-K hot carriers, and up to ten times when the hot-carrier temperature approaching the lattice temperature. The incorporation of zinc-dopant into perovskites can reduce the nonadiabatic couplings between conduction bands, which retards the photogenerated hot-carriers relaxation process. Our findings present a practical strategy to slow down the hot-carrier cooling in perovskites at low carrier densities, which are valuable for the further development of practical perovskite hot-carrier photovoltaics .

Original language	English (US)
Journal	Angewandte Chemie
DOIs	https://doi.org/10.1002/ange.202100099 https://doi.org/10.1002/anie.202100099
State	Published - Feb 25 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-03-01
Acknowledgements: Q.W. and J. Y. contributed equally to this w ork. Q.W. thanks the support from the Natural Science Foundation of China (61904152) and the China Postdoctoral Science Foundation (2019M653721). The Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2019A1515012186). G. X. acknow ledges the financial supported by Macau Science and Technology Development Funds (FDCT091/2017/A2, FDCT-014/2017/AMJ), Research Grants (MYRG2018-00148-IAPME) from University of Macau, the Natural Science Foundation of China (91733302, 61605073, 61935017). M.J.L. acknow ledges the financial support from Hong Kong Polytechnic University (Grant No. 1-BE2Z and 1- ZVGH). J. Y., O. M. B., and O. F. M. acknow ledge the Supercomputing Laboratory at KAUST for their computational
and storage resources, as w ell as their efficient technical assistance.

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@article{be12da6068314fcab51cb757bf86dd17,

title = "Effect of Zinc-doping on the Reduction of the Hot-carrier Cooling Rate in Halide Perovskites",

abstract = "Fast hot-carrier cooling process in the solar-absorbers fundamentally limits the photon-energy conversion efficiencies. It is highly desirable to develop the solar absorber with long-lived hot-carriers at sun-illumination level, which can be used to develop the hot-carrier solar cells with enhanced efficiency. Herein, we reveal that zinc-doped (0.34%) halide perovskites have the slower hot-carrier cooling compared with the pristine sample through the transient absorption spectroscopy measurements and theoretical calculations. The hot-carrier energy loss rate at the low photoexcitation level of 10 17 cm -3 is found to be ~3 times smaller than that of un-doped perovskites for 500-K hot carriers, and up to ten times when the hot-carrier temperature approaching the lattice temperature. The incorporation of zinc-dopant into perovskites can reduce the nonadiabatic couplings between conduction bands, which retards the photogenerated hot-carriers relaxation process. Our findings present a practical strategy to slow down the hot-carrier cooling in perovskites at low carrier densities, which are valuable for the further development of practical perovskite hot-carrier photovoltaics .",

author = "Guichuan Xing and Qi WEI and Jun Yin and Osman Bakr and Ze Wang and Chenhao Wang and Mohammed, {Omar F.} and Mingjie Li",

note = "KAUST Repository Item: Exported on 2021-03-01 Acknowledgements: Q.W. and J. Y. contributed equally to this w ork. Q.W. thanks the support from the Natural Science Foundation of China (61904152) and the China Postdoctoral Science Foundation (2019M653721). The Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2019A1515012186). G. X. acknow ledges the financial supported by Macau Science and Technology Development Funds (FDCT091/2017/A2, FDCT-014/2017/AMJ), Research Grants (MYRG2018-00148-IAPME) from University of Macau, the Natural Science Foundation of China (91733302, 61605073, 61935017). M.J.L. acknow ledges the financial support from Hong Kong Polytechnic University (Grant No. 1-BE2Z and 1- ZVGH). J. Y., O. M. B., and O. F. M. acknow ledge the Supercomputing Laboratory at KAUST for their computational and storage resources, as w ell as their efficient technical assistance.",

year = "2021",

month = feb,

day = "25",

doi = "10.1002/ange.202100099",

language = "English (US)",

journal = "Angewandte Chemie",

issn = "0044-8249",

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T1 - Effect of Zinc-doping on the Reduction of the Hot-carrier Cooling Rate in Halide Perovskites

AU - Xing, Guichuan

AU - WEI, Qi

AU - Yin, Jun

AU - Bakr, Osman

AU - Wang, Ze

AU - Wang, Chenhao

AU - Mohammed, Omar F.

AU - Li, Mingjie

N1 - KAUST Repository Item: Exported on 2021-03-01 Acknowledgements: Q.W. and J. Y. contributed equally to this w ork. Q.W. thanks the support from the Natural Science Foundation of China (61904152) and the China Postdoctoral Science Foundation (2019M653721). The Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2019A1515012186). G. X. acknow ledges the financial supported by Macau Science and Technology Development Funds (FDCT091/2017/A2, FDCT-014/2017/AMJ), Research Grants (MYRG2018-00148-IAPME) from University of Macau, the Natural Science Foundation of China (91733302, 61605073, 61935017). M.J.L. acknow ledges the financial support from Hong Kong Polytechnic University (Grant No. 1-BE2Z and 1- ZVGH). J. Y., O. M. B., and O. F. M. acknow ledge the Supercomputing Laboratory at KAUST for their computational and storage resources, as w ell as their efficient technical assistance.

PY - 2021/2/25

Y1 - 2021/2/25

N2 - Fast hot-carrier cooling process in the solar-absorbers fundamentally limits the photon-energy conversion efficiencies. It is highly desirable to develop the solar absorber with long-lived hot-carriers at sun-illumination level, which can be used to develop the hot-carrier solar cells with enhanced efficiency. Herein, we reveal that zinc-doped (0.34%) halide perovskites have the slower hot-carrier cooling compared with the pristine sample through the transient absorption spectroscopy measurements and theoretical calculations. The hot-carrier energy loss rate at the low photoexcitation level of 10 17 cm -3 is found to be ~3 times smaller than that of un-doped perovskites for 500-K hot carriers, and up to ten times when the hot-carrier temperature approaching the lattice temperature. The incorporation of zinc-dopant into perovskites can reduce the nonadiabatic couplings between conduction bands, which retards the photogenerated hot-carriers relaxation process. Our findings present a practical strategy to slow down the hot-carrier cooling in perovskites at low carrier densities, which are valuable for the further development of practical perovskite hot-carrier photovoltaics .

AB - Fast hot-carrier cooling process in the solar-absorbers fundamentally limits the photon-energy conversion efficiencies. It is highly desirable to develop the solar absorber with long-lived hot-carriers at sun-illumination level, which can be used to develop the hot-carrier solar cells with enhanced efficiency. Herein, we reveal that zinc-doped (0.34%) halide perovskites have the slower hot-carrier cooling compared with the pristine sample through the transient absorption spectroscopy measurements and theoretical calculations. The hot-carrier energy loss rate at the low photoexcitation level of 10 17 cm -3 is found to be ~3 times smaller than that of un-doped perovskites for 500-K hot carriers, and up to ten times when the hot-carrier temperature approaching the lattice temperature. The incorporation of zinc-dopant into perovskites can reduce the nonadiabatic couplings between conduction bands, which retards the photogenerated hot-carriers relaxation process. Our findings present a practical strategy to slow down the hot-carrier cooling in perovskites at low carrier densities, which are valuable for the further development of practical perovskite hot-carrier photovoltaics .

UR - http://hdl.handle.net/10754/667719

UR - https://onlinelibrary.wiley.com/doi/10.1002/ange.202100099

U2 - 10.1002/ange.202100099

DO - 10.1002/ange.202100099

M3 - Article

C2 - 33629387

SN - 0044-8249

JO - Angewandte Chemie

JF - Angewandte Chemie

ER -

Effect of Zinc-doping on the Reduction of the Hot-carrier Cooling Rate in Halide Perovskites

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