Impact of Photoluminescence Reabsorption in Metal-Halide Perovskite Solar Cells

Mingcong Wang; Kai Wang; Yajun Gao; Jafar Iqbal Khan; Wenchao Yang; Stefaan De Wolf; Frédéric Laquai

doi:10.1002/solr.202100029

Impact of Photoluminescence Reabsorption in Metal-Halide Perovskite Solar Cells

Mingcong Wang, Kai Wang, Yajun Gao, Jafar Iqbal Khan, Wenchao Yang, Stefaan De Wolf, Frédéric Laquai

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

11 Scopus citations

Abstract

The precise quantification of the impact of photoluminescence reabsorption (PLr) in metal-halide perovskite solar cells (PSCs) has remained challenging. Here, the PLr effect is examined by combined time-resolved photoluminescence (TRPL) spectroscopy and time-resolved terahertz spectroscopy (TRTS) and a model is proposed which relates both the PLr and non-radiative recombination rate (k nr ) to the quasi-Fermi-level-splitting (QFLS). PLr is shown to be beneficial for the QFLS when k nr is below a critical value of ∽7×105 s−1; at high k nr PLr is detrimental to the QFLS. By incorporating PLr into a two-diode model that allows extraction of the effective k nr , the series resistance (r s ), and the shunt resistance (r sh ) in PSCs, we find that neglecting PLr overestimates the effective k nr , while it does not affect the value of r s and r sh . Our findings provide insight into the impact of the PLr effect on metal-halide PSCs.

Original language	English (US)
Journal	Solar RRL
DOIs	https://doi.org/10.1002/solr.202100029
State	Published - Mar 17 2021

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title = "Impact of Photoluminescence Reabsorption in Metal-Halide Perovskite Solar Cells",

abstract = "The precise quantification of the impact of photoluminescence reabsorption (PLr) in metal-halide perovskite solar cells (PSCs) has remained challenging. Here, the PLr effect is examined by combined time-resolved photoluminescence (TRPL) spectroscopy and time-resolved terahertz spectroscopy (TRTS) and a model is proposed which relates both the PLr and non-radiative recombination rate (k nr ) to the quasi-Fermi-level-splitting (QFLS). PLr is shown to be beneficial for the QFLS when k nr is below a critical value of ∽7×105 s−1; at high k nr PLr is detrimental to the QFLS. By incorporating PLr into a two-diode model that allows extraction of the effective k nr , the series resistance (r s ), and the shunt resistance (r sh ) in PSCs, we find that neglecting PLr overestimates the effective k nr , while it does not affect the value of r s and r sh . Our findings provide insight into the impact of the PLr effect on metal-halide PSCs.",

author = "Mingcong Wang and Kai Wang and Yajun Gao and Khan, {Jafar Iqbal} and Wenchao Yang and {De Wolf}, Stefaan and Fr{\'e}d{\'e}ric Laquai",

note = "KAUST Repository Item: Exported on 2021-03-23 Acknowledged KAUST grant number(s): OSR-2018-CARF/CCF-3079 Acknowledgements: This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-2018-CARF/CCF-3079. M.W. and F.L. thank Denis Andrienko and Julien Gorenflot for fruitful discussions and comments on the work.",

year = "2021",

month = mar,

day = "17",

doi = "10.1002/solr.202100029",

language = "English (US)",

journal = "Solar RRL",

issn = "2367-198X",

publisher = "Wiley-VCH Verlag",

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TY - JOUR

T1 - Impact of Photoluminescence Reabsorption in Metal-Halide Perovskite Solar Cells

AU - Wang, Mingcong

AU - Wang, Kai

AU - Gao, Yajun

AU - Khan, Jafar Iqbal

AU - Yang, Wenchao

AU - De Wolf, Stefaan

AU - Laquai, Frédéric

N1 - KAUST Repository Item: Exported on 2021-03-23 Acknowledged KAUST grant number(s): OSR-2018-CARF/CCF-3079 Acknowledgements: This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-2018-CARF/CCF-3079. M.W. and F.L. thank Denis Andrienko and Julien Gorenflot for fruitful discussions and comments on the work.

PY - 2021/3/17

Y1 - 2021/3/17

N2 - The precise quantification of the impact of photoluminescence reabsorption (PLr) in metal-halide perovskite solar cells (PSCs) has remained challenging. Here, the PLr effect is examined by combined time-resolved photoluminescence (TRPL) spectroscopy and time-resolved terahertz spectroscopy (TRTS) and a model is proposed which relates both the PLr and non-radiative recombination rate (k nr ) to the quasi-Fermi-level-splitting (QFLS). PLr is shown to be beneficial for the QFLS when k nr is below a critical value of ∽7×105 s−1; at high k nr PLr is detrimental to the QFLS. By incorporating PLr into a two-diode model that allows extraction of the effective k nr , the series resistance (r s ), and the shunt resistance (r sh ) in PSCs, we find that neglecting PLr overestimates the effective k nr , while it does not affect the value of r s and r sh . Our findings provide insight into the impact of the PLr effect on metal-halide PSCs.

AB - The precise quantification of the impact of photoluminescence reabsorption (PLr) in metal-halide perovskite solar cells (PSCs) has remained challenging. Here, the PLr effect is examined by combined time-resolved photoluminescence (TRPL) spectroscopy and time-resolved terahertz spectroscopy (TRTS) and a model is proposed which relates both the PLr and non-radiative recombination rate (k nr ) to the quasi-Fermi-level-splitting (QFLS). PLr is shown to be beneficial for the QFLS when k nr is below a critical value of ∽7×105 s−1; at high k nr PLr is detrimental to the QFLS. By incorporating PLr into a two-diode model that allows extraction of the effective k nr , the series resistance (r s ), and the shunt resistance (r sh ) in PSCs, we find that neglecting PLr overestimates the effective k nr , while it does not affect the value of r s and r sh . Our findings provide insight into the impact of the PLr effect on metal-halide PSCs.

UR - http://hdl.handle.net/10754/668186

UR - https://onlinelibrary.wiley.com/doi/10.1002/solr.202100029

U2 - 10.1002/solr.202100029

DO - 10.1002/solr.202100029

M3 - Article

SN - 2367-198X

JO - Solar RRL

JF - Solar RRL

ER -

Impact of Photoluminescence Reabsorption in Metal-Halide Perovskite Solar Cells

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