Temperature Dependence of the Urbach Energy in Lead Iodide Perovskites

Martin Ledinsky; Tereza Schönfeldová; Jakub Holovský; Erkan Aydin; Zdeňka Hájková; Lucie Landová; Neda Neyková; Antonín Fejfar; Stefaan De Wolf

doi:10.1021/acs.jpclett.9b00138

Temperature Dependence of the Urbach Energy in Lead Iodide Perovskites

Martin Ledinsky, Tereza Schönfeldová, Jakub Holovský, Erkan Aydin, Zdeňka Hájková, Lucie Landová, Neda Neyková, Antonín Fejfar, Stefaan De Wolf

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Abstract

To gain insight into the properties of photovoltaic and light-emitting materials, detailed information about their optical absorption spectra is essential. Here, we elucidate the temperature dependence of such spectra for methylammonium lead iodide (CH3NH3PbI3), with specific attention to its sub-band gap absorption edge (often termed Urbach energy). On the basis of these data, we first find clear further evidence for the universality of the correlation between the Urbach energy and open-circuit voltage losses of solar cells. Second, we find that for CH3NH3PbI3 the static, temperature-independent, contribution of the Urbach energy is 3.8 ± 0.7 meV, which is smaller than that of crystalline silicon (Si), gallium arsenide (GaAs), indium phosphide (InP), or gallium nitride (GaN), underlining the remarkable optoelectronic properties of perovskites.

Original language	English (US)
Pages (from-to)	1368-1373
Number of pages	6
Journal	The Journal of Physical Chemistry Letters
Volume	10
Issue number	6
DOIs	https://doi.org/10.1021/acs.jpclett.9b00138
State	Published - Mar 6 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR-CARF URF/1/3079-33-01
Acknowledgements: Authors thank David Cahen for fruitful discussions. We acknowledge the support of Czech Science Foundation Project No. 17-26041Y; Operational Programme Research, Development and Education financed by the European Structural and Investment Funds; and the Czech Ministry of Education, Youth and Sports (Project No. CZ.02.1.01/0.0/0.0/16_019/0000760 - SOLID21 and No. CZ.02.1.01/0.0/0.0/15_003/0000464 - Centre of Advanced Photovoltaics). E.A. and S.D.W. acknowledge King Abdullah University of Science and Technology (KAUST) for the financial support under Award No. OSR-CARF URF/1/3079-33-01.

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10.1021/acs.jpclett.9b00138

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title = "Temperature Dependence of the Urbach Energy in Lead Iodide Perovskites",

abstract = "To gain insight into the properties of photovoltaic and light-emitting materials, detailed information about their optical absorption spectra is essential. Here, we elucidate the temperature dependence of such spectra for methylammonium lead iodide (CH3NH3PbI3), with specific attention to its sub-band gap absorption edge (often termed Urbach energy). On the basis of these data, we first find clear further evidence for the universality of the correlation between the Urbach energy and open-circuit voltage losses of solar cells. Second, we find that for CH3NH3PbI3 the static, temperature-independent, contribution of the Urbach energy is 3.8 ± 0.7 meV, which is smaller than that of crystalline silicon (Si), gallium arsenide (GaAs), indium phosphide (InP), or gallium nitride (GaN), underlining the remarkable optoelectronic properties of perovskites.",

author = "Martin Ledinsky and Tereza Sch{\"o}nfeldov{\'a} and Jakub Holovsk{\'y} and Erkan Aydin and Zde{\v n}ka H{\'a}jkov{\'a} and Lucie Landov{\'a} and Neda Neykov{\'a} and Anton{\'i}n Fejfar and {De Wolf}, Stefaan",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): OSR-CARF URF/1/3079-33-01 Acknowledgements: Authors thank David Cahen for fruitful discussions. We acknowledge the support of Czech Science Foundation Project No. 17-26041Y; Operational Programme Research, Development and Education financed by the European Structural and Investment Funds; and the Czech Ministry of Education, Youth and Sports (Project No. CZ.02.1.01/0.0/0.0/16_019/0000760 - SOLID21 and No. CZ.02.1.01/0.0/0.0/15_003/0000464 - Centre of Advanced Photovoltaics). E.A. and S.D.W. acknowledge King Abdullah University of Science and Technology (KAUST) for the financial support under Award No. OSR-CARF URF/1/3079-33-01.",

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doi = "10.1021/acs.jpclett.9b00138",

language = "English (US)",

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AU - Ledinsky, Martin

AU - Schönfeldová, Tereza

AU - Holovský, Jakub

AU - Aydin, Erkan

AU - Hájková, Zdeňka

AU - Landová, Lucie

AU - Neyková, Neda

AU - Fejfar, Antonín

AU - De Wolf, Stefaan

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): OSR-CARF URF/1/3079-33-01 Acknowledgements: Authors thank David Cahen for fruitful discussions. We acknowledge the support of Czech Science Foundation Project No. 17-26041Y; Operational Programme Research, Development and Education financed by the European Structural and Investment Funds; and the Czech Ministry of Education, Youth and Sports (Project No. CZ.02.1.01/0.0/0.0/16_019/0000760 - SOLID21 and No. CZ.02.1.01/0.0/0.0/15_003/0000464 - Centre of Advanced Photovoltaics). E.A. and S.D.W. acknowledge King Abdullah University of Science and Technology (KAUST) for the financial support under Award No. OSR-CARF URF/1/3079-33-01.

PY - 2019/3/6

Y1 - 2019/3/6

N2 - To gain insight into the properties of photovoltaic and light-emitting materials, detailed information about their optical absorption spectra is essential. Here, we elucidate the temperature dependence of such spectra for methylammonium lead iodide (CH3NH3PbI3), with specific attention to its sub-band gap absorption edge (often termed Urbach energy). On the basis of these data, we first find clear further evidence for the universality of the correlation between the Urbach energy and open-circuit voltage losses of solar cells. Second, we find that for CH3NH3PbI3 the static, temperature-independent, contribution of the Urbach energy is 3.8 ± 0.7 meV, which is smaller than that of crystalline silicon (Si), gallium arsenide (GaAs), indium phosphide (InP), or gallium nitride (GaN), underlining the remarkable optoelectronic properties of perovskites.

AB - To gain insight into the properties of photovoltaic and light-emitting materials, detailed information about their optical absorption spectra is essential. Here, we elucidate the temperature dependence of such spectra for methylammonium lead iodide (CH3NH3PbI3), with specific attention to its sub-band gap absorption edge (often termed Urbach energy). On the basis of these data, we first find clear further evidence for the universality of the correlation between the Urbach energy and open-circuit voltage losses of solar cells. Second, we find that for CH3NH3PbI3 the static, temperature-independent, contribution of the Urbach energy is 3.8 ± 0.7 meV, which is smaller than that of crystalline silicon (Si), gallium arsenide (GaAs), indium phosphide (InP), or gallium nitride (GaN), underlining the remarkable optoelectronic properties of perovskites.

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EP - 1373

JO - The Journal of Physical Chemistry Letters

JF - The Journal of Physical Chemistry Letters

IS - 6

ER -

Temperature Dependence of the Urbach Energy in Lead Iodide Perovskites

Abstract

Bibliographical note

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