Suppressed phase segregation for triple-junction perovskite solar cells

Zaiwei Wang; Lewei Zeng; Tong Zhu; Hao Chen; Bin Chen; Dominik J. Kubicki; Adam Balvanz; Chongwen Li; Aidan Maxwell; Esma Ugur; Roberto dos Reis; Matthew Cheng; Guang Yang; Biwas Subedi; Deying Luo; Juntao Hu; Junke Wang; Sam Teale; Suhas Mahesh; Sasa Wang; Shuangyan Hu; Eui Dae Jung; Mingyang Wei; So Min Park; Luke Grater; Erkan Aydin; Zhaoning Song; Nikolas J. Podraza; Zheng-Hong Lu; Jinsong Huang; Vinayak P. Dravid; Stefaan De Wolf; Yanfa Yan; Michael Grätzel; Mercouri G. Kanatzidis; Edward H. Sargent

doi:10.1038/s41586-023-06006-7

Suppressed phase segregation for triple-junction perovskite solar cells

Zaiwei Wang, Lewei Zeng, Tong Zhu, Hao Chen, Bin Chen, Dominik J. Kubicki, Adam Balvanz, Chongwen Li, Aidan Maxwell, Esma Ugur, Roberto dos Reis, Matthew Cheng, Guang Yang, Biwas Subedi, Deying Luo, Juntao Hu, Junke Wang, Sam Teale, Suhas Mahesh, Sasa WangShuangyan Hu, Eui Dae Jung, Mingyang Wei, So Min Park, Luke Grater, Erkan Aydin, Zhaoning Song, Nikolas J. Podraza, Zheng-Hong Lu, Jinsong Huang, Vinayak P. Dravid, Stefaan De Wolf, Yanfa Yan, Michael Grätzel, Mercouri G. Kanatzidis, Edward H. Sargent^*

^*Corresponding author for this work

Chemistry

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

Abstract

The tunable bandgaps and facile fabrication of perovskites make them attractive for multi-junction photovoltaics1,2. However, light-induced phase segregation limits their efficiency and stability3,4,5: this occurs in wide-bandgap (>1.65 electron volts) iodide/bromide mixed perovskite absorbers, and becomes even more acute in the top cells of triple-junction solar photovoltaics that require a fully 2.0-electron-volt bandgap absorber2,6. Here we report that lattice distortion in iodide/bromide mixed perovskites is correlated with the suppression of phase segregation, generating an increased ion-migration energy barrier arising from the decreased average interatomic distance between the A-site cation and iodide. Using an approximately 2.0-electron-volt rubidium/caesium mixed-cation inorganic perovskite with large lattice distortion in the top subcell, we fabricated all-perovskite triple-junction solar cells and achieved an efficiency of 24.3 per cent (23.3 per cent certified quasi-steady-state efficiency) with an open-circuit voltage of 3.21 volts. This is, to our knowledge, the first reported certified efficiency for perovskite-based triple-junction solar cells. The triple-junction devices retain 80 per cent of their initial efficiency following 420 hours of operation at the maximum power point.

Original language	English
Pages (from-to)	74–79
Journal	Nature
Volume	618
Early online date	28 Mar 2023
DOIs	https://doi.org/10.1038/s41586-023-06006-7
Publication status	Published - 1 Jun 2023

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@article{fb9b8a4eeb1444278086bab4538af973,

title = "Suppressed phase segregation for triple-junction perovskite solar cells",

abstract = "The tunable bandgaps and facile fabrication of perovskites make them attractive for multi-junction photovoltaics1,2. However, light-induced phase segregation limits their efficiency and stability3,4,5: this occurs in wide-bandgap (>1.65 electron volts) iodide/bromide mixed perovskite absorbers, and becomes even more acute in the top cells of triple-junction solar photovoltaics that require a fully 2.0-electron-volt bandgap absorber2,6. Here we report that lattice distortion in iodide/bromide mixed perovskites is correlated with the suppression of phase segregation, generating an increased ion-migration energy barrier arising from the decreased average interatomic distance between the A-site cation and iodide. Using an approximately 2.0-electron-volt rubidium/caesium mixed-cation inorganic perovskite with large lattice distortion in the top subcell, we fabricated all-perovskite triple-junction solar cells and achieved an efficiency of 24.3 per cent (23.3 per cent certified quasi-steady-state efficiency) with an open-circuit voltage of 3.21 volts. This is, to our knowledge, the first reported certified efficiency for perovskite-based triple-junction solar cells. The triple-junction devices retain 80 per cent of their initial efficiency following 420 hours of operation at the maximum power point.",

author = "Zaiwei Wang and Lewei Zeng and Tong Zhu and Hao Chen and Bin Chen and Kubicki, {Dominik J.} and Adam Balvanz and Chongwen Li and Aidan Maxwell and Esma Ugur and Reis, {Roberto dos} and Matthew Cheng and Guang Yang and Biwas Subedi and Deying Luo and Juntao Hu and Junke Wang and Sam Teale and Suhas Mahesh and Sasa Wang and Shuangyan Hu and Jung, {Eui Dae} and Mingyang Wei and Park, {So Min} and Luke Grater and Erkan Aydin and Zhaoning Song and Podraza, {Nikolas J.} and Zheng-Hong Lu and Jinsong Huang and Dravid, {Vinayak P.} and Wolf, {Stefaan De} and Yanfa Yan and Michael Gr{\"a}tzel and Kanatzidis, {Mercouri G.} and Sargent, {Edward H.}",

year = "2023",

month = jun,

day = "1",

doi = "10.1038/s41586-023-06006-7",

language = "English",

volume = "618",

pages = "74–79",

journal = "Nature",

issn = "0028-0836",

publisher = "Nature Publishing Group",

}

Wang, Z, Zeng, L, Zhu, T, Chen, H, Chen, B, Kubicki, DJ, Balvanz, A, Li, C, Maxwell, A, Ugur, E, Reis, RD, Cheng, M, Yang, G, Subedi, B, Luo, D, Hu, J, Wang, J, Teale, S, Mahesh, S, Wang, S, Hu, S, Jung, ED, Wei, M, Park, SM, Grater, L, Aydin, E, Song, Z, Podraza, NJ, Lu, Z-H, Huang, J, Dravid, VP, Wolf, SD, Yan, Y, Grätzel, M, Kanatzidis, MG & Sargent, EH 2023, 'Suppressed phase segregation for triple-junction perovskite solar cells', Nature, vol. 618, pp. 74–79. https://doi.org/10.1038/s41586-023-06006-7

TY - JOUR

T1 - Suppressed phase segregation for triple-junction perovskite solar cells

AU - Wang, Zaiwei

AU - Zeng, Lewei

AU - Zhu, Tong

AU - Chen, Hao

AU - Chen, Bin

AU - Kubicki, Dominik J.

AU - Balvanz, Adam

AU - Li, Chongwen

AU - Maxwell, Aidan

AU - Ugur, Esma

AU - Reis, Roberto dos

AU - Cheng, Matthew

AU - Yang, Guang

AU - Subedi, Biwas

AU - Luo, Deying

AU - Hu, Juntao

AU - Wang, Junke

AU - Teale, Sam

AU - Mahesh, Suhas

AU - Wang, Sasa

AU - Hu, Shuangyan

AU - Jung, Eui Dae

AU - Wei, Mingyang

AU - Park, So Min

AU - Grater, Luke

AU - Aydin, Erkan

AU - Song, Zhaoning

AU - Podraza, Nikolas J.

AU - Lu, Zheng-Hong

AU - Huang, Jinsong

AU - Dravid, Vinayak P.

AU - Wolf, Stefaan De

AU - Yan, Yanfa

AU - Grätzel, Michael

AU - Kanatzidis, Mercouri G.

AU - Sargent, Edward H.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - The tunable bandgaps and facile fabrication of perovskites make them attractive for multi-junction photovoltaics1,2. However, light-induced phase segregation limits their efficiency and stability3,4,5: this occurs in wide-bandgap (>1.65 electron volts) iodide/bromide mixed perovskite absorbers, and becomes even more acute in the top cells of triple-junction solar photovoltaics that require a fully 2.0-electron-volt bandgap absorber2,6. Here we report that lattice distortion in iodide/bromide mixed perovskites is correlated with the suppression of phase segregation, generating an increased ion-migration energy barrier arising from the decreased average interatomic distance between the A-site cation and iodide. Using an approximately 2.0-electron-volt rubidium/caesium mixed-cation inorganic perovskite with large lattice distortion in the top subcell, we fabricated all-perovskite triple-junction solar cells and achieved an efficiency of 24.3 per cent (23.3 per cent certified quasi-steady-state efficiency) with an open-circuit voltage of 3.21 volts. This is, to our knowledge, the first reported certified efficiency for perovskite-based triple-junction solar cells. The triple-junction devices retain 80 per cent of their initial efficiency following 420 hours of operation at the maximum power point.

AB - The tunable bandgaps and facile fabrication of perovskites make them attractive for multi-junction photovoltaics1,2. However, light-induced phase segregation limits their efficiency and stability3,4,5: this occurs in wide-bandgap (>1.65 electron volts) iodide/bromide mixed perovskite absorbers, and becomes even more acute in the top cells of triple-junction solar photovoltaics that require a fully 2.0-electron-volt bandgap absorber2,6. Here we report that lattice distortion in iodide/bromide mixed perovskites is correlated with the suppression of phase segregation, generating an increased ion-migration energy barrier arising from the decreased average interatomic distance between the A-site cation and iodide. Using an approximately 2.0-electron-volt rubidium/caesium mixed-cation inorganic perovskite with large lattice distortion in the top subcell, we fabricated all-perovskite triple-junction solar cells and achieved an efficiency of 24.3 per cent (23.3 per cent certified quasi-steady-state efficiency) with an open-circuit voltage of 3.21 volts. This is, to our knowledge, the first reported certified efficiency for perovskite-based triple-junction solar cells. The triple-junction devices retain 80 per cent of their initial efficiency following 420 hours of operation at the maximum power point.

U2 - 10.1038/s41586-023-06006-7

DO - 10.1038/s41586-023-06006-7

M3 - Article

SN - 0028-0836

VL - 618

SP - 74

EP - 79

JO - Nature

JF - Nature

ER -

Suppressed phase segregation for triple-junction perovskite solar cells

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