Universal buried interface modification with lead iodide for efficient and stable perovskite solar cells

Dang Thuan Nguyen; Anh Dinh Bui; Daniel Walter; Khoa Nguyen; Hualin Zhan; Xuan Minh Chau Ta; Grace Dansoa Tabi; Thành Trần-Phú; Li Chun Chang; Keqing Huang; Minh Anh Truong; Atsushi Wakamiya; Sunita Gautam Adhikari; Hieu Nguyen; Anne Haggren; Viqar Ahmad; Thanh Tung Duong; Nguyen Duy Cuong; Heping Shen; Kylie Catchpole; Klaus Weber; Thomas White; The Duong

doi:10.1039/d5ta01282a

Universal buried interface modification with lead iodide for efficient and stable perovskite solar cells

Dang Thuan Nguyen, Anh Dinh Bui, Daniel Walter, Khoa Nguyen, Hualin Zhan, Xuan Minh Chau Ta, Grace Dansoa Tabi, Thành Trần-Phú, Li Chun Chang, Keqing Huang, Minh Anh Truong, Atsushi Wakamiya, Sunita Gautam Adhikari, Hieu Nguyen, Anne Haggren, Viqar Ahmad, Thanh Tung Duong, Nguyen Duy Cuong, Heping Shen, Kylie CatchpoleKlaus Weber, Thomas White, The Duong

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

2 Citations (Scopus)

Abstract

A controlled amount of excess lead iodide (PbI₂) in the perovskite precursor has been widely used in perovskite solar cells (PSCs) to enhance the device's performance by passivating defects. However, an excessive amount of PbI₂ can lead to significant hysteresis and reduced stability. Managing the excess PbI₂ in the perovskite bulk and on the top (exposed) surface is achievable, but the bottom surface presents a challenge. This study offers a method for adjusting the amount of excess PbI₂ in perovskite solar cells at both the bottom surface and the bulk of the perovskite layer. This treatment, known as buried interface modification, is effective for both negative-intrinsic-positive (n-i-p) and positive-intrinsic-negative (p-i-n) structures, achieving efficiencies of 25.9% and 24.6%, respectively, with negligible hysteresis and excellent stability of over 1000 hours under light at the maximum power point.

Original language	English
Pages (from-to)	14055-14063
Number of pages	9
Journal	Journal of Materials Chemistry A
Volume	13
Issue number	19
Early online date	31 Mar 2025
DOIs	https://doi.org/10.1039/d5ta01282a
Publication status	Published - 21 May 2025

Keywords

lead iodide (PbI2)
perovskite solar cells (PSCs)
interface modification

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Nguyen, D. T., Bui, A. D., Walter, D., Nguyen, K., Zhan, H., Ta, X. M. C., Tabi, G. D., Trần-Phú, T., Chang, L. C., Huang, K., Truong, M. A., Wakamiya, A., Adhikari, S. G., Nguyen, H., Haggren, A., Ahmad, V., Duong, T. T., Cuong, N. D., Shen, H., ... Duong, T. (2025). Universal buried interface modification with lead iodide for efficient and stable perovskite solar cells. Journal of Materials Chemistry A, 13(19), 14055-14063. https://doi.org/10.1039/d5ta01282a

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title = "Universal buried interface modification with lead iodide for efficient and stable perovskite solar cells",

abstract = "A controlled amount of excess lead iodide (PbI2) in the perovskite precursor has been widely used in perovskite solar cells (PSCs) to enhance the device's performance by passivating defects. However, an excessive amount of PbI2 can lead to significant hysteresis and reduced stability. Managing the excess PbI2 in the perovskite bulk and on the top (exposed) surface is achievable, but the bottom surface presents a challenge. This study offers a method for adjusting the amount of excess PbI2 in perovskite solar cells at both the bottom surface and the bulk of the perovskite layer. This treatment, known as buried interface modification, is effective for both negative-intrinsic-positive (n-i-p) and positive-intrinsic-negative (p-i-n) structures, achieving efficiencies of 25.9% and 24.6%, respectively, with negligible hysteresis and excellent stability of over 1000 hours under light at the maximum power point.",

keywords = "lead iodide (PbI2), perovskite solar cells (PSCs), interface modification",

author = "Nguyen, {Dang Thuan} and Bui, {Anh Dinh} and Daniel Walter and Khoa Nguyen and Hualin Zhan and Ta, {Xuan Minh Chau} and Tabi, {Grace Dansoa} and Th{\`a}nh Trần-Ph{\'u} and Chang, {Li Chun} and Keqing Huang and Truong, {Minh Anh} and Atsushi Wakamiya and Adhikari, {Sunita Gautam} and Hieu Nguyen and Anne Haggren and Viqar Ahmad and Duong, {Thanh Tung} and Cuong, {Nguyen Duy} and Heping Shen and Kylie Catchpole and Klaus Weber and Thomas White and The Duong",

year = "2025",

month = may,

day = "21",

doi = "10.1039/d5ta01282a",

language = "English",

volume = "13",

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Nguyen, DT, Bui, AD, Walter, D, Nguyen, K, Zhan, H, Ta, XMC, Tabi, GD, Trần-Phú, T, Chang, LC, Huang, K, Truong, MA, Wakamiya, A, Adhikari, SG, Nguyen, H, Haggren, A, Ahmad, V, Duong, TT, Cuong, ND, Shen, H, Catchpole, K, Weber, K, White, T & Duong, T 2025, 'Universal buried interface modification with lead iodide for efficient and stable perovskite solar cells', Journal of Materials Chemistry A, vol. 13, no. 19, pp. 14055-14063. https://doi.org/10.1039/d5ta01282a

TY - JOUR

T1 - Universal buried interface modification with lead iodide for efficient and stable perovskite solar cells

AU - Nguyen, Dang Thuan

AU - Bui, Anh Dinh

AU - Walter, Daniel

AU - Nguyen, Khoa

AU - Zhan, Hualin

AU - Ta, Xuan Minh Chau

AU - Tabi, Grace Dansoa

AU - Trần-Phú, Thành

AU - Chang, Li Chun

AU - Huang, Keqing

AU - Truong, Minh Anh

AU - Wakamiya, Atsushi

AU - Adhikari, Sunita Gautam

AU - Nguyen, Hieu

AU - Haggren, Anne

AU - Ahmad, Viqar

AU - Duong, Thanh Tung

AU - Cuong, Nguyen Duy

AU - Shen, Heping

AU - Catchpole, Kylie

AU - Weber, Klaus

AU - White, Thomas

AU - Duong, The

PY - 2025/5/21

Y1 - 2025/5/21

N2 - A controlled amount of excess lead iodide (PbI2) in the perovskite precursor has been widely used in perovskite solar cells (PSCs) to enhance the device's performance by passivating defects. However, an excessive amount of PbI2 can lead to significant hysteresis and reduced stability. Managing the excess PbI2 in the perovskite bulk and on the top (exposed) surface is achievable, but the bottom surface presents a challenge. This study offers a method for adjusting the amount of excess PbI2 in perovskite solar cells at both the bottom surface and the bulk of the perovskite layer. This treatment, known as buried interface modification, is effective for both negative-intrinsic-positive (n-i-p) and positive-intrinsic-negative (p-i-n) structures, achieving efficiencies of 25.9% and 24.6%, respectively, with negligible hysteresis and excellent stability of over 1000 hours under light at the maximum power point.

AB - A controlled amount of excess lead iodide (PbI2) in the perovskite precursor has been widely used in perovskite solar cells (PSCs) to enhance the device's performance by passivating defects. However, an excessive amount of PbI2 can lead to significant hysteresis and reduced stability. Managing the excess PbI2 in the perovskite bulk and on the top (exposed) surface is achievable, but the bottom surface presents a challenge. This study offers a method for adjusting the amount of excess PbI2 in perovskite solar cells at both the bottom surface and the bulk of the perovskite layer. This treatment, known as buried interface modification, is effective for both negative-intrinsic-positive (n-i-p) and positive-intrinsic-negative (p-i-n) structures, achieving efficiencies of 25.9% and 24.6%, respectively, with negligible hysteresis and excellent stability of over 1000 hours under light at the maximum power point.

KW - lead iodide (PbI2)

KW - perovskite solar cells (PSCs)

KW - interface modification

UR - http://www.scopus.com/inward/record.url?scp=105002320185&partnerID=8YFLogxK

U2 - 10.1039/d5ta01282a

DO - 10.1039/d5ta01282a

M3 - Article

AN - SCOPUS:105002320185

SN - 2050-7488

VL - 13

SP - 14055

EP - 14063

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 19

ER -

Universal buried interface modification with lead iodide for efficient and stable perovskite solar cells

Abstract

Keywords

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