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

84 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",

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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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