Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells

Yi Yang; Hao Chen; Cheng Liu; Jian Xu; Chuying Huang; Christos D. Malliakas; Haoyue Wan; Abdulaziz S.R. Bati; Zaiwei Wang; Robert P. Reynolds; Isaiah W. Gilley; Shuta Kitade; Taylor E. Wiggins; Stefan Zeiske; Selengesuren Suragtkhuu; Munkhbayar Batmunkh; Lin X. Chen; Bin Chen; Mercouri G. Kanatzidis; Edward H. Sargent

doi:10.1126/science.adr2091

Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells

Original language	English
Pages (from-to)	898-902
Number of pages	5
Journal	Science
Volume	386
Issue number	6724
DOIs	https://doi.org/10.1126/science.adr2091
Publication status	Published - 22 Nov 2024
Externally published	Yes

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@article{b3df6a99c4ff4e4ab142e28d68b0069a,

title = "Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells",

abstract = "Surface passivation has driven the rapid increase in the power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, state-of-the-art surface passivation techniques rely on ammonium ligands that suffer deprotonation under light and thermal stress. We developed a library of amidinium ligands, of interest for their resonance effect–enhanced N–H bonds that may resist deprotonation, to increase the thermal stability of passivation layers on perovskite surfaces. This strategy resulted in a >10-fold reduction in the ligand deprotonation equilibrium constant and a twofold increase in the maintenance of photoluminescence quantum yield after aging at 85°C under illumination in air. Implementing this approach, we achieved a certified quasi–steady-state PCE of 26.3\% for inverted PSCs; and we report retention of ≥90\% PCE after 1100 hours of continuous 1-sun maximum power point operation at 85°C.",

author = "Yi Yang and Hao Chen and Cheng Liu and Jian Xu and Chuying Huang and Malliakas, \{Christos D.\} and Haoyue Wan and Bati, \{Abdulaziz S.R.\} and Zaiwei Wang and Reynolds, \{Robert P.\} and Gilley, \{Isaiah W.\} and Shuta Kitade and Wiggins, \{Taylor E.\} and Stefan Zeiske and Selengesuren Suragtkhuu and Munkhbayar Batmunkh and Chen, \{Lin X.\} and Bin Chen and Kanatzidis, \{Mercouri G.\} and Sargent, \{Edward H.\}",

note = "Publisher Copyright: Copyright {\textcopyright} 2024 the authors, some rights reserved.",

year = "2024",

month = nov,

day = "22",

doi = "10.1126/science.adr2091",

language = "English",

volume = "386",

pages = "898--902",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6724",

}

Yang, Y, Chen, H, Liu, C, Xu, J, Huang, C, Malliakas, CD, Wan, H, Bati, ASR, Wang, Z, Reynolds, RP, Gilley, IW, Kitade, S, Wiggins, TE, Zeiske, S, Suragtkhuu, S, Batmunkh, M, Chen, LX, Chen, B, Kanatzidis, MG & Sargent, EH 2024, 'Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells', Science, vol. 386, no. 6724, pp. 898-902. https://doi.org/10.1126/science.adr2091

TY - JOUR

T1 - Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells

AU - Yang, Yi

AU - Chen, Hao

AU - Liu, Cheng

AU - Xu, Jian

AU - Huang, Chuying

AU - Malliakas, Christos D.

AU - Wan, Haoyue

AU - Bati, Abdulaziz S.R.

AU - Wang, Zaiwei

AU - Reynolds, Robert P.

AU - Gilley, Isaiah W.

AU - Kitade, Shuta

AU - Wiggins, Taylor E.

AU - Zeiske, Stefan

AU - Suragtkhuu, Selengesuren

AU - Batmunkh, Munkhbayar

AU - Chen, Lin X.

AU - Chen, Bin

AU - Kanatzidis, Mercouri G.

AU - Sargent, Edward H.

PY - 2024/11/22

Y1 - 2024/11/22

N2 - Surface passivation has driven the rapid increase in the power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, state-of-the-art surface passivation techniques rely on ammonium ligands that suffer deprotonation under light and thermal stress. We developed a library of amidinium ligands, of interest for their resonance effect–enhanced N–H bonds that may resist deprotonation, to increase the thermal stability of passivation layers on perovskite surfaces. This strategy resulted in a >10-fold reduction in the ligand deprotonation equilibrium constant and a twofold increase in the maintenance of photoluminescence quantum yield after aging at 85°C under illumination in air. Implementing this approach, we achieved a certified quasi–steady-state PCE of 26.3% for inverted PSCs; and we report retention of ≥90% PCE after 1100 hours of continuous 1-sun maximum power point operation at 85°C.

AB - Surface passivation has driven the rapid increase in the power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, state-of-the-art surface passivation techniques rely on ammonium ligands that suffer deprotonation under light and thermal stress. We developed a library of amidinium ligands, of interest for their resonance effect–enhanced N–H bonds that may resist deprotonation, to increase the thermal stability of passivation layers on perovskite surfaces. This strategy resulted in a >10-fold reduction in the ligand deprotonation equilibrium constant and a twofold increase in the maintenance of photoluminescence quantum yield after aging at 85°C under illumination in air. Implementing this approach, we achieved a certified quasi–steady-state PCE of 26.3% for inverted PSCs; and we report retention of ≥90% PCE after 1100 hours of continuous 1-sun maximum power point operation at 85°C.

UR - https://www.scopus.com/pages/publications/85210462153

U2 - 10.1126/science.adr2091

DO - 10.1126/science.adr2091

M3 - Article

C2 - 39571031

AN - SCOPUS:85210462153

SN - 0036-8075

VL - 386

SP - 898

EP - 902

JO - Science

JF - Science

IS - 6724

ER -

Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells

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