Diamine chelates for increased stability in mixed Sn–Pb and all-perovskite tandem solar cells

Chongwen Li; Lei Chen; Fangyuan Jiang; Zhaoning Song; Xiaoming Wang; Adam Balvanz; Esma Ugur; Yuan Liu; Cheng Liu; Aidan Maxwell; Hao Chen; Yanjiang Liu; Zaiwei Wang; Pan Xia; You Li; Sheng Fu; Nannan Sun; Corey R. Grice; Xuefei Wu; Zachary Fink; Qin Hu; Lewei Zeng; Euidae Jung; Junke Wang; So Min Park; Deying Luo; Cailing Chen; Jie Shen; Yu Han; Carlo Andrea Riccardo Perini; Juan Pablo Correa-Baena; Zheng Hong Lu; Thomas P. Russell; Stefaan De Wolf; Mercouri G. Kanatzidis; David S. Ginger; Bin Chen; Yanfa Yan; Edward H. Sargent

doi:10.1038/s41560-024-01613-8

Diamine chelates for increased stability in mixed Sn–Pb and all-perovskite tandem solar cells

Chongwen Li, Lei Chen, Fangyuan Jiang, Zhaoning Song, Xiaoming Wang, Adam Balvanz, Esma Ugur, Yuan Liu, Cheng Liu, Aidan Maxwell, Hao Chen, Yanjiang Liu, Zaiwei Wang, Pan Xia, You Li, Sheng Fu, Nannan Sun, Corey R. Grice, Xuefei Wu, Zachary FinkQin Hu, Lewei Zeng, Euidae Jung, Junke Wang, So Min Park, Deying Luo, Cailing Chen, Jie Shen, Yu Han, Carlo Andrea Riccardo Perini, Juan Pablo Correa-Baena, Zheng Hong Lu, Thomas P. Russell, Stefaan De Wolf, Mercouri G. Kanatzidis, David S. Ginger, Bin Chen^*, Yanfa Yan^*, Edward H. Sargent^*

^*Corresponding author for this work

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

38 Scopus citations

Abstract

Perovskite tandem solar cells show promising performance, but non-radiative recombination and its progressive worsening with time, especially in the mixed Sn–Pb low-bandgap layer, limit performance and stability. Here we find that mixed Sn–Pb perovskite thin films exhibit a compositional gradient, with an excess of Sn on the surface—and we show this gradient exacerbates oxidation and increases the recombination rate. We find that diamines preferentially chelate Sn atoms, removing them from the film surface and achieving a more balanced Sn:Pb stoichiometry, making the surface of the film resistive to the oxidation of Sn. The process forms an electrically resistive low-dimensional barrier layer, passivating defects and reducing interface recombination. Further improving the homogeneity of the barrier layer using 1,2-diaminopropane results in more uniform distribution and passivation. Tandems achieve a power conversion efficiency of 28.8%. Encapsulated tandems retain 90% of initial efficiency following 1,000 h of operating at the maximum power point under simulated one-sun illumination in air without cooling.

Original language	English (US)
Pages (from-to)	1388-1396
Number of pages	9
Journal	NATURE ENERGY
Volume	9
Issue number	11
DOIs	https://doi.org/10.1038/s41560-024-01613-8
State	Published - Nov 2024

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology

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

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10.1038/s41560-024-01613-8

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Li, C., Chen, L., Jiang, F., Song, Z., Wang, X., Balvanz, A., Ugur, E., Liu, Y., Liu, C., Maxwell, A., Chen, H., Liu, Y., Wang, Z., Xia, P., Li, Y., Fu, S., Sun, N., Grice, C. R., Wu, X., ... Sargent, E. H. (2024). Diamine chelates for increased stability in mixed Sn–Pb and all-perovskite tandem solar cells. NATURE ENERGY, 9(11), 1388-1396. https://doi.org/10.1038/s41560-024-01613-8

@article{f713eed198ac4734a73c825e85bc840b,

title = "Diamine chelates for increased stability in mixed Sn–Pb and all-perovskite tandem solar cells",

abstract = "Perovskite tandem solar cells show promising performance, but non-radiative recombination and its progressive worsening with time, especially in the mixed Sn–Pb low-bandgap layer, limit performance and stability. Here we find that mixed Sn–Pb perovskite thin films exhibit a compositional gradient, with an excess of Sn on the surface—and we show this gradient exacerbates oxidation and increases the recombination rate. We find that diamines preferentially chelate Sn atoms, removing them from the film surface and achieving a more balanced Sn:Pb stoichiometry, making the surface of the film resistive to the oxidation of Sn. The process forms an electrically resistive low-dimensional barrier layer, passivating defects and reducing interface recombination. Further improving the homogeneity of the barrier layer using 1,2-diaminopropane results in more uniform distribution and passivation. Tandems achieve a power conversion efficiency of 28.8\%. Encapsulated tandems retain 90\% of initial efficiency following 1,000 h of operating at the maximum power point under simulated one-sun illumination in air without cooling.",

author = "Chongwen Li and Lei Chen and Fangyuan Jiang and Zhaoning Song and Xiaoming Wang and Adam Balvanz and Esma Ugur and Yuan Liu and Cheng Liu and Aidan Maxwell and Hao Chen and Yanjiang Liu and Zaiwei Wang and Pan Xia and You Li and Sheng Fu and Nannan Sun and Grice, \{Corey R.\} and Xuefei Wu and Zachary Fink and Qin Hu and Lewei Zeng and Euidae Jung and Junke Wang and Park, \{So Min\} and Deying Luo and Cailing Chen and Jie Shen and Yu Han and Perini, \{Carlo Andrea Riccardo\} and Correa-Baena, \{Juan Pablo\} and Lu, \{Zheng Hong\} and Russell, \{Thomas P.\} and \{De Wolf\}, Stefaan and Kanatzidis, \{Mercouri G.\} and Ginger, \{David S.\} and Bin Chen and Yanfa Yan and Sargent, \{Edward H.\}",

note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive licence to Springer Nature Limited 2024.",

year = "2024",

month = nov,

doi = "10.1038/s41560-024-01613-8",

language = "English (US)",

volume = "9",

pages = "1388--1396",

journal = "NATURE ENERGY",

issn = "2058-7546",

publisher = "Springer Nature",

number = "11",

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Li, C, Chen, L, Jiang, F, Song, Z, Wang, X, Balvanz, A, Ugur, E, Liu, Y, Liu, C, Maxwell, A, Chen, H, Liu, Y, Wang, Z, Xia, P, Li, Y, Fu, S, Sun, N, Grice, CR, Wu, X, Fink, Z, Hu, Q, Zeng, L, Jung, E, Wang, J, Park, SM, Luo, D, Chen, C, Shen, J, Han, Y, Perini, CAR, Correa-Baena, JP, Lu, ZH, Russell, TP, De Wolf, S, Kanatzidis, MG, Ginger, DS, Chen, B, Yan, Y & Sargent, EH 2024, 'Diamine chelates for increased stability in mixed Sn–Pb and all-perovskite tandem solar cells', NATURE ENERGY, vol. 9, no. 11, pp. 1388-1396. https://doi.org/10.1038/s41560-024-01613-8

TY - JOUR

T1 - Diamine chelates for increased stability in mixed Sn–Pb and all-perovskite tandem solar cells

AU - Li, Chongwen

AU - Chen, Lei

AU - Jiang, Fangyuan

AU - Song, Zhaoning

AU - Wang, Xiaoming

AU - Balvanz, Adam

AU - Ugur, Esma

AU - Liu, Yuan

AU - Liu, Cheng

AU - Maxwell, Aidan

AU - Chen, Hao

AU - Liu, Yanjiang

AU - Wang, Zaiwei

AU - Xia, Pan

AU - Li, You

AU - Fu, Sheng

AU - Sun, Nannan

AU - Grice, Corey R.

AU - Wu, Xuefei

AU - Fink, Zachary

AU - Hu, Qin

AU - Zeng, Lewei

AU - Jung, Euidae

AU - Wang, Junke

AU - Park, So Min

AU - Luo, Deying

AU - Chen, Cailing

AU - Shen, Jie

AU - Han, Yu

AU - Perini, Carlo Andrea Riccardo

AU - Correa-Baena, Juan Pablo

AU - Lu, Zheng Hong

AU - Russell, Thomas P.

AU - De Wolf, Stefaan

AU - Kanatzidis, Mercouri G.

AU - Ginger, David S.

AU - Chen, Bin

AU - Yan, Yanfa

AU - Sargent, Edward H.

PY - 2024/11

Y1 - 2024/11

N2 - Perovskite tandem solar cells show promising performance, but non-radiative recombination and its progressive worsening with time, especially in the mixed Sn–Pb low-bandgap layer, limit performance and stability. Here we find that mixed Sn–Pb perovskite thin films exhibit a compositional gradient, with an excess of Sn on the surface—and we show this gradient exacerbates oxidation and increases the recombination rate. We find that diamines preferentially chelate Sn atoms, removing them from the film surface and achieving a more balanced Sn:Pb stoichiometry, making the surface of the film resistive to the oxidation of Sn. The process forms an electrically resistive low-dimensional barrier layer, passivating defects and reducing interface recombination. Further improving the homogeneity of the barrier layer using 1,2-diaminopropane results in more uniform distribution and passivation. Tandems achieve a power conversion efficiency of 28.8%. Encapsulated tandems retain 90% of initial efficiency following 1,000 h of operating at the maximum power point under simulated one-sun illumination in air without cooling.

AB - Perovskite tandem solar cells show promising performance, but non-radiative recombination and its progressive worsening with time, especially in the mixed Sn–Pb low-bandgap layer, limit performance and stability. Here we find that mixed Sn–Pb perovskite thin films exhibit a compositional gradient, with an excess of Sn on the surface—and we show this gradient exacerbates oxidation and increases the recombination rate. We find that diamines preferentially chelate Sn atoms, removing them from the film surface and achieving a more balanced Sn:Pb stoichiometry, making the surface of the film resistive to the oxidation of Sn. The process forms an electrically resistive low-dimensional barrier layer, passivating defects and reducing interface recombination. Further improving the homogeneity of the barrier layer using 1,2-diaminopropane results in more uniform distribution and passivation. Tandems achieve a power conversion efficiency of 28.8%. Encapsulated tandems retain 90% of initial efficiency following 1,000 h of operating at the maximum power point under simulated one-sun illumination in air without cooling.

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U2 - 10.1038/s41560-024-01613-8

DO - 10.1038/s41560-024-01613-8

M3 - Article

AN - SCOPUS:85201287741

SN - 2058-7546

VL - 9

SP - 1388

EP - 1396

JO - NATURE ENERGY

JF - NATURE ENERGY

IS - 11

ER -

Diamine chelates for increased stability in mixed Sn–Pb and all-perovskite tandem solar cells

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