Permeable Modification and Near‐Infrared Absorption of n‐Type Non‐Fullerene Acceptors for High‐Performance Perovskite Solar Cells DOI

Yunuo Hui,

Xiong Chang,

Haorui Tang

et al.

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: June 4, 2025

As the foremost electron transport material in inverted perovskite solar cells, phenyl‐C61‐butyric acid methyl ester (PCBM) is constrained by its inadequate electrical properties and defect passivation capability to fabricate devices with better performance. Herein, a non‐fullerene acceptor molecule eC9‐2Cl introduced into PCBM, which simultaneously passivates defects distributed on surface, enhances of provides additional near‐infrared absorption. The strategic incorporation optimizes band alignment increases mobility. Furthermore, electron‐deficient thiophene carbonyl moieties effectively passivate uncoordinated Pb 2+ defects. eC9‐2Cl‐doped PCBM showed an increased open‐circuit voltage ( V OC ) 1.12 V, attaining champion power conversion efficiency (PCE) 24.40% narrow distribution. Moreover, modified demonstrate exceptional retention 96% initial PCE after storing under ambient air for over 1800 h. This can be attributed enhanced uniformity, passivation, augmented hydrophobicity introduction.

Language: Английский

Thermally Induced Neodymium‐Doped Strategy toward Wide Band Gap Perovskite Solar Cells with a Fill Factor over 86% DOI Open Access

Mengni Zhou,

Zhewen Xie,

Yong Han

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract To approach the Shockley‐Queisser (S‐Q) limit in perovskite solar cells (PSCs), enhancing fill factor (FF), a crucial parameter associated with carrier transport and nonradiative recombination, is of paramount importance. In this paper, rare earths (RE), neodymium salt used as dopant 4‐(3‐,6‐dimethoxy‐9h‐carbazol‐9‐butyl) phosphonic acid (MeO‐4PACz) to obtain MeO‐4PACz:Nd 3+ , Nd migration induced during annealing. It worth noting that uniform diffusion layer significantly increases defect‐formation energy perovskite, thus reducing density defect states, greatly improving rate inhibited non‐radiative recombination. The experimental results show wide‐band gap (WBG) PSCs based on has an excellent power conversion efficiency (PCE) 22.82% FF 86.35%. proposed method provides direct for RE promote perovskites.

Language: Английский

Citations

0
Multifunctional Biguanide Salts as Efficient Defect Passivators for High-Performance Inverted Perovskite Solar Cells DOI

Huxue He,

Yong Zhu,

Xiong Chang

et al.

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Language: Английский

Citations

0
Permeable Modification and Near‐Infrared Absorption of n‐Type Non‐Fullerene Acceptors for High‐Performance Perovskite Solar Cells DOI

Yunuo Hui,

Xiong Chang,

Haorui Tang

et al.

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: June 4, 2025

As the foremost electron transport material in inverted perovskite solar cells, phenyl‐C61‐butyric acid methyl ester (PCBM) is constrained by its inadequate electrical properties and defect passivation capability to fabricate devices with better performance. Herein, a non‐fullerene acceptor molecule eC9‐2Cl introduced into PCBM, which simultaneously passivates defects distributed on surface, enhances of provides additional near‐infrared absorption. The strategic incorporation optimizes band alignment increases mobility. Furthermore, electron‐deficient thiophene carbonyl moieties effectively passivate uncoordinated Pb 2+ defects. eC9‐2Cl‐doped PCBM showed an increased open‐circuit voltage ( V OC ) 1.12 V, attaining champion power conversion efficiency (PCE) 24.40% narrow distribution. Moreover, modified demonstrate exceptional retention 96% initial PCE after storing under ambient air for over 1800 h. This can be attributed enhanced uniformity, passivation, augmented hydrophobicity introduction.

Language: Английский

Citations

0