Dual molecular bridges at perovskite heterointerfaces for efficient inverted solar cells

Qing Lian; Lina Wang; Guoliang Wang; Guojun Mi; Bowei Li; Joel A. Smith; Pietro Caprioglio; Manuel Kober-Czerny; Deng Wang; Qiming Yin; Jiong Yang; Sibo Li; Xiao Liang; Shaokuan Gong; Dongyang Li; Hanlin Hu; Xihan Chen; Xugang Guo; Longbin Qiu; Baomin Xu; Gang Li; Anita W.Y. Ho-Baillie; Wei Zhang; Guangfu Luo; Henry J. Snaith; Chun Cheng

doi:10.1093/nsr/nwaf211

Dual molecular bridges at perovskite heterointerfaces for efficient inverted solar cells

Qing Lian, Lina Wang, Guoliang Wang, Guojun Mi, Bowei Li, Joel A. Smith, Pietro Caprioglio, Manuel Kober-Czerny, Deng Wang, Qiming Yin, Jiong Yang, Sibo Li, Xiao Liang, Shaokuan Gong, Dongyang Li, Hanlin Hu, Xihan Chen, Xugang Guo, Longbin Qiu, Baomin XuGang Li, Anita W.Y. Ho-Baillie, Wei Zhang, Guangfu Luo, Henry J. Snaith, Chun Cheng

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

Utilizing molecular bridges presents a promising means to enhance the performance of perovskite solar cells (PSCs). However, concurrently bridging the perovskite absorber and its two adjacent interfaces remains a significant challenge that is yet to be achieved. Here, we construct dual molecular bridges at perovskite heterointerfaces, enabled by a self-organizing additive of 4-fluoro-phenethylammonium formate (4-F-PEAFa) and a synthesized hole transporter of [2-(7H-dibenzo[c, g]carbazol-7-yl)ethyl]phosphonic acid (DBZ-2PACz). The molecular bridges spanning two interfaces lead to the formation of an 'integral carrier transport pathway', mitigating both non-radiative recombination and charge-transport losses in the fabricated PSC devices. We thus achieve a champion power conversion efficiency (PCE) of 26.0% (25.6% certified) in inverted PSCs, accompanied by an exceptionally high fill factor of 0.87 (maximum 0.88 from the certified devices, 97% of its Shockley-Queisser limit) and a low ideality factor of 1.06. The unencapsulated devices retain 96% of their PCEs after aging at 85°C for 2200 h and 90% after maximum power point tracking at an elevated temperature of 50°C for 973 h.

Original language	English
Article number	nwaf211
Pages (from-to)	1-9
Journal	National Science Review
Volume	12
Issue number	7
DOIs	https://doi.org/10.1093/nsr/nwaf211
Publication status	Published - May 2025

Keywords

heterointerface engineering
molecular bridge
perovskite solar cell
self-assemble material

ASJC Scopus subject areas

General

More information

10.1093/nsr/nwaf211

Cite this

Lian, Q., Wang, L., Wang, G., Mi, G., Li, B., Smith, J. A., Caprioglio, P., Kober-Czerny, M., Wang, D., Yin, Q., Yang, J., Li, S., Liang, X., Gong, S., Li, D., Hu, H., Chen, X., Guo, X., Qiu, L., ... Cheng, C. (2025). Dual molecular bridges at perovskite heterointerfaces for efficient inverted solar cells. National Science Review, 12(7), 1-9. Article nwaf211. https://doi.org/10.1093/nsr/nwaf211

@article{09fe984c3d2c4736be7c0e1eb4d0991e,

title = "Dual molecular bridges at perovskite heterointerfaces for efficient inverted solar cells",

abstract = "Utilizing molecular bridges presents a promising means to enhance the performance of perovskite solar cells (PSCs). However, concurrently bridging the perovskite absorber and its two adjacent interfaces remains a significant challenge that is yet to be achieved. Here, we construct dual molecular bridges at perovskite heterointerfaces, enabled by a self-organizing additive of 4-fluoro-phenethylammonium formate (4-F-PEAFa) and a synthesized hole transporter of [2-(7H-dibenzo[c, g]carbazol-7-yl)ethyl]phosphonic acid (DBZ-2PACz). The molecular bridges spanning two interfaces lead to the formation of an 'integral carrier transport pathway', mitigating both non-radiative recombination and charge-transport losses in the fabricated PSC devices. We thus achieve a champion power conversion efficiency (PCE) of 26.0\% (25.6\% certified) in inverted PSCs, accompanied by an exceptionally high fill factor of 0.87 (maximum 0.88 from the certified devices, 97\% of its Shockley-Queisser limit) and a low ideality factor of 1.06. The unencapsulated devices retain 96\% of their PCEs after aging at 85°C for 2200 h and 90\% after maximum power point tracking at an elevated temperature of 50°C for 973 h.",

keywords = "heterointerface engineering, molecular bridge, perovskite solar cell, self-assemble material",

author = "Qing Lian and Lina Wang and Guoliang Wang and Guojun Mi and Bowei Li and Smith, \{Joel A.\} and Pietro Caprioglio and Manuel Kober-Czerny and Deng Wang and Qiming Yin and Jiong Yang and Sibo Li and Xiao Liang and Shaokuan Gong and Dongyang Li and Hanlin Hu and Xihan Chen and Xugang Guo and Longbin Qiu and Baomin Xu and Gang Li and Ho-Baillie, \{Anita W.Y.\} and Wei Zhang and Guangfu Luo and Snaith, \{Henry J.\} and Chun Cheng",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s). Published by Oxford University Press on behalf of China Science Publishing \& Media Ltd.",

year = "2025",

month = may,

doi = "10.1093/nsr/nwaf211",

language = "English",

volume = "12",

pages = "1--9",

journal = "National Science Review",

issn = "2095-5138",

publisher = "Oxford University Press",

number = "7",

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Lian, Q, Wang, L, Wang, G, Mi, G, Li, B, Smith, JA, Caprioglio, P, Kober-Czerny, M, Wang, D, Yin, Q, Yang, J, Li, S, Liang, X, Gong, S, Li, D, Hu, H, Chen, X, Guo, X, Qiu, L, Xu, B, Li, G, Ho-Baillie, AWY, Zhang, W, Luo, G, Snaith, HJ & Cheng, C 2025, 'Dual molecular bridges at perovskite heterointerfaces for efficient inverted solar cells', National Science Review, vol. 12, no. 7, nwaf211, pp. 1-9. https://doi.org/10.1093/nsr/nwaf211

TY - JOUR

T1 - Dual molecular bridges at perovskite heterointerfaces for efficient inverted solar cells

AU - Lian, Qing

AU - Wang, Lina

AU - Wang, Guoliang

AU - Mi, Guojun

AU - Li, Bowei

AU - Smith, Joel A.

AU - Caprioglio, Pietro

AU - Kober-Czerny, Manuel

AU - Wang, Deng

AU - Yin, Qiming

AU - Yang, Jiong

AU - Li, Sibo

AU - Liang, Xiao

AU - Gong, Shaokuan

AU - Li, Dongyang

AU - Hu, Hanlin

AU - Chen, Xihan

AU - Guo, Xugang

AU - Qiu, Longbin

AU - Xu, Baomin

AU - Li, Gang

AU - Ho-Baillie, Anita W.Y.

AU - Zhang, Wei

AU - Luo, Guangfu

AU - Snaith, Henry J.

AU - Cheng, Chun

PY - 2025/5

Y1 - 2025/5

N2 - Utilizing molecular bridges presents a promising means to enhance the performance of perovskite solar cells (PSCs). However, concurrently bridging the perovskite absorber and its two adjacent interfaces remains a significant challenge that is yet to be achieved. Here, we construct dual molecular bridges at perovskite heterointerfaces, enabled by a self-organizing additive of 4-fluoro-phenethylammonium formate (4-F-PEAFa) and a synthesized hole transporter of [2-(7H-dibenzo[c, g]carbazol-7-yl)ethyl]phosphonic acid (DBZ-2PACz). The molecular bridges spanning two interfaces lead to the formation of an 'integral carrier transport pathway', mitigating both non-radiative recombination and charge-transport losses in the fabricated PSC devices. We thus achieve a champion power conversion efficiency (PCE) of 26.0% (25.6% certified) in inverted PSCs, accompanied by an exceptionally high fill factor of 0.87 (maximum 0.88 from the certified devices, 97% of its Shockley-Queisser limit) and a low ideality factor of 1.06. The unencapsulated devices retain 96% of their PCEs after aging at 85°C for 2200 h and 90% after maximum power point tracking at an elevated temperature of 50°C for 973 h.

AB - Utilizing molecular bridges presents a promising means to enhance the performance of perovskite solar cells (PSCs). However, concurrently bridging the perovskite absorber and its two adjacent interfaces remains a significant challenge that is yet to be achieved. Here, we construct dual molecular bridges at perovskite heterointerfaces, enabled by a self-organizing additive of 4-fluoro-phenethylammonium formate (4-F-PEAFa) and a synthesized hole transporter of [2-(7H-dibenzo[c, g]carbazol-7-yl)ethyl]phosphonic acid (DBZ-2PACz). The molecular bridges spanning two interfaces lead to the formation of an 'integral carrier transport pathway', mitigating both non-radiative recombination and charge-transport losses in the fabricated PSC devices. We thus achieve a champion power conversion efficiency (PCE) of 26.0% (25.6% certified) in inverted PSCs, accompanied by an exceptionally high fill factor of 0.87 (maximum 0.88 from the certified devices, 97% of its Shockley-Queisser limit) and a low ideality factor of 1.06. The unencapsulated devices retain 96% of their PCEs after aging at 85°C for 2200 h and 90% after maximum power point tracking at an elevated temperature of 50°C for 973 h.

KW - heterointerface engineering

KW - molecular bridge

KW - perovskite solar cell

KW - self-assemble material

UR - https://www.scopus.com/pages/publications/105009538734

U2 - 10.1093/nsr/nwaf211

DO - 10.1093/nsr/nwaf211

M3 - Journal article

AN - SCOPUS:105009538734

SN - 2095-5138

VL - 12

SP - 1

EP - 9

JO - National Science Review

JF - National Science Review

IS - 7

M1 - nwaf211

ER -

Dual molecular bridges at perovskite heterointerfaces for efficient inverted solar cells

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