Incorporating Potassium Citrate to Improve the Performance of Tin-Lead Perovskite Solar Cells

Lei Chen; Chongwen Li; Yeming Xian; Sheng Fu; Abasi Abudulimu; Deng Bing Li; Jared D. Friedl; You Li; Sabin Neupane; Marie Solange Tumusange; Nannan Sun; Xiaoming Wang; Randy J. Ellingson; Michael J. Heben; Nikolas J. Podraza; Zhaoning Song; Yanfa Yan

doi:10.1002/aenm.202301218

Incorporating Potassium Citrate to Improve the Performance of Tin-Lead Perovskite Solar Cells

Lei Chen, Chongwen Li, Yeming Xian, Sheng Fu, Abasi Abudulimu, Deng Bing Li, Jared D. Friedl, You Li, Sabin Neupane, Marie Solange Tumusange, Nannan Sun, Xiaoming Wang, Randy J. Ellingson, Michael J. Heben, Nikolas J. Podraza, Zhaoning Song^*, Yanfa Yan^*

^*Corresponding author for this work

University of Toledo

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

82 Scopus citations

Abstract

Easy-to-form tin vacancies at the buried interface of tin-lead perovskites hinder the performance of low-bandgap perovskite solar cells (PSCs). Here, a synergistic strategy by incorporating potassium citrate (PC) into the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hole-transport layer to passivate the buried interface of Sn-Pb PSCs is reported. PC neutralizes the acidity of PEDOT:PSS and stabilizes the perovskite front surface, enhancing device stability. Citrate moieties coordinate with Sn²⁺ on the buried perovskite surface, preventing Sn²⁺ oxidation and suppressing defect formation. Additionally, potassium cations incorporate into Sn-Pb perovskites, enhancing crystallinity and passivating halide defects. The combined benefits enable efficient low-bandgap Sn-Pb PSCs with a power conversion efficiency of 22.7% and a high open-circuit voltage of 0.894 V. Using this method, 26.1% efficiency for all-perovskite tandem solar cells is demonstrated. These results emphasize the significance of buried interface passivation in developing efficient and stable Sn-Pb PSCs and all-perovskite tandem solar cells.

Original language	English
Article number	2301218
Journal	Advanced Energy Materials
Volume	13
Issue number	32
DOIs	https://doi.org/10.1002/aenm.202301218
State	Published - 25 Aug 2023
Externally published	Yes

Keywords

all-perovskite tandem solar cells
buried interface
defect passivation
low-bandgap perovskites

UN SDGs

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

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10.1002/aenm.202301218

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Chen, L., Li, C., Xian, Y., Fu, S., Abudulimu, A., Li, D. B., Friedl, J. D., Li, Y., Neupane, S., Tumusange, M. S., Sun, N., Wang, X., Ellingson, R. J., Heben, M. J., Podraza, N. J., Song, Z., & Yan, Y. (2023). Incorporating Potassium Citrate to Improve the Performance of Tin-Lead Perovskite Solar Cells. Advanced Energy Materials, 13(32), Article 2301218. https://doi.org/10.1002/aenm.202301218

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title = "Incorporating Potassium Citrate to Improve the Performance of Tin-Lead Perovskite Solar Cells",

abstract = "Easy-to-form tin vacancies at the buried interface of tin-lead perovskites hinder the performance of low-bandgap perovskite solar cells (PSCs). Here, a synergistic strategy by incorporating potassium citrate (PC) into the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hole-transport layer to passivate the buried interface of Sn-Pb PSCs is reported. PC neutralizes the acidity of PEDOT:PSS and stabilizes the perovskite front surface, enhancing device stability. Citrate moieties coordinate with Sn2+ on the buried perovskite surface, preventing Sn2+ oxidation and suppressing defect formation. Additionally, potassium cations incorporate into Sn-Pb perovskites, enhancing crystallinity and passivating halide defects. The combined benefits enable efficient low-bandgap Sn-Pb PSCs with a power conversion efficiency of 22.7\% and a high open-circuit voltage of 0.894 V. Using this method, 26.1\% efficiency for all-perovskite tandem solar cells is demonstrated. These results emphasize the significance of buried interface passivation in developing efficient and stable Sn-Pb PSCs and all-perovskite tandem solar cells.",

keywords = "all-perovskite tandem solar cells, buried interface, defect passivation, low-bandgap perovskites",

author = "Lei Chen and Chongwen Li and Yeming Xian and Sheng Fu and Abasi Abudulimu and Li, \{Deng Bing\} and Friedl, \{Jared D.\} and You Li and Sabin Neupane and Tumusange, \{Marie Solange\} and Nannan Sun and Xiaoming Wang and Ellingson, \{Randy J.\} and Heben, \{Michael J.\} and Podraza, \{Nikolas J.\} and Zhaoning Song and Yanfa Yan",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH.",

year = "2023",

month = aug,

day = "25",

doi = "10.1002/aenm.202301218",

language = "英语",

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T1 - Incorporating Potassium Citrate to Improve the Performance of Tin-Lead Perovskite Solar Cells

AU - Chen, Lei

AU - Li, Chongwen

AU - Xian, Yeming

AU - Fu, Sheng

AU - Abudulimu, Abasi

AU - Li, Deng Bing

AU - Friedl, Jared D.

AU - Li, You

AU - Neupane, Sabin

AU - Tumusange, Marie Solange

AU - Sun, Nannan

AU - Wang, Xiaoming

AU - Ellingson, Randy J.

AU - Heben, Michael J.

AU - Podraza, Nikolas J.

AU - Song, Zhaoning

AU - Yan, Yanfa

PY - 2023/8/25

Y1 - 2023/8/25

N2 - Easy-to-form tin vacancies at the buried interface of tin-lead perovskites hinder the performance of low-bandgap perovskite solar cells (PSCs). Here, a synergistic strategy by incorporating potassium citrate (PC) into the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hole-transport layer to passivate the buried interface of Sn-Pb PSCs is reported. PC neutralizes the acidity of PEDOT:PSS and stabilizes the perovskite front surface, enhancing device stability. Citrate moieties coordinate with Sn2+ on the buried perovskite surface, preventing Sn2+ oxidation and suppressing defect formation. Additionally, potassium cations incorporate into Sn-Pb perovskites, enhancing crystallinity and passivating halide defects. The combined benefits enable efficient low-bandgap Sn-Pb PSCs with a power conversion efficiency of 22.7% and a high open-circuit voltage of 0.894 V. Using this method, 26.1% efficiency for all-perovskite tandem solar cells is demonstrated. These results emphasize the significance of buried interface passivation in developing efficient and stable Sn-Pb PSCs and all-perovskite tandem solar cells.

AB - Easy-to-form tin vacancies at the buried interface of tin-lead perovskites hinder the performance of low-bandgap perovskite solar cells (PSCs). Here, a synergistic strategy by incorporating potassium citrate (PC) into the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) hole-transport layer to passivate the buried interface of Sn-Pb PSCs is reported. PC neutralizes the acidity of PEDOT:PSS and stabilizes the perovskite front surface, enhancing device stability. Citrate moieties coordinate with Sn2+ on the buried perovskite surface, preventing Sn2+ oxidation and suppressing defect formation. Additionally, potassium cations incorporate into Sn-Pb perovskites, enhancing crystallinity and passivating halide defects. The combined benefits enable efficient low-bandgap Sn-Pb PSCs with a power conversion efficiency of 22.7% and a high open-circuit voltage of 0.894 V. Using this method, 26.1% efficiency for all-perovskite tandem solar cells is demonstrated. These results emphasize the significance of buried interface passivation in developing efficient and stable Sn-Pb PSCs and all-perovskite tandem solar cells.

KW - all-perovskite tandem solar cells

KW - buried interface

KW - defect passivation

KW - low-bandgap perovskites

UR - https://www.scopus.com/pages/publications/85164801958

U2 - 10.1002/aenm.202301218

DO - 10.1002/aenm.202301218

M3 - 文章

AN - SCOPUS:85164801958

SN - 1614-6832

VL - 13

JO - Advanced Energy Materials

JF - Advanced Energy Materials

IS - 32

M1 - 2301218

ER -

Incorporating Potassium Citrate to Improve the Performance of Tin-Lead Perovskite Solar Cells

Abstract

Keywords

UN SDGs

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