Halogenated Chiral Organic Spacer Cation Regulation for Efficient and Stable 2D Ruddlesden‐Popper Perovskite Solar Cells DOI
Xin Li, Dong Xue,

Zihong Shen

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 20, 2025

Abstract 2D Ruddlesden‐Popper (2DRP) perovskites have emerged as promising candidates for next‐generation photovoltaic devices owing to their excellent environmental stability, moisture resistance, and photo‐stability. However, power conversion efficiencies (PCEs) still lag behind those of 3D counterparts, primarily due the poor charge‐carrier transport associated with insulating bulky organic spacer cations. In this work, a series halogenated chiral spacers– S ‐ α ‐fluorophenylethylamine acrylate ( ‐α‐FPEAAA), ‐α‐chlorophenylethylamine ‐α‐ClPEAAA), S‐α‐bromophenylethylamine ‐α‐BrPEAAA)–are employed regulate charge within 2DRP framework. Incorporating halogen atoms facilitates halogen–halogen interactions between spacers PbI 6 4− octahedral framework, thereby enhancing structural ordering electronic coupling. Among these, ‐α‐BrPEAAA‐based exhibit superior film morphology, improved crystallinity, an exceptional carrier lifetime 3.353 µs. Notably, inverted perovskite solar cell based on ‐α‐BrPEAAA achieves high PCE 20.30%, rivaling best‐performing systems reported recently. Moreover, device demonstrates long‐term retaining over 95% initial efficiency after 2000 h storage under nitrogen atmosphere. These findings highlight potential in advancing high‐performance stable photovoltaics.

Язык: Английский

Optimizing Buried Interface Quality in Inverted Perovskite Solar Cells by Modulating the Spatial Orientation of Polymer Hole Transport Materials Using Rigid copolymer Units DOI
Xiaoran Yan,

Mengdan Yang,

Weihao Li

и другие.

Dyes and Pigments, Год журнала: 2025, Номер unknown, С. 112676 - 112676

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Organic Molecule Vapor‐Assisted Passivation for Efficient and Stable Perovskite Solar Cells DOI Open Access

Hongpei Ji,

Bingqian Zhang,

Qiangqiang Zhao

и другие.

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

Abstract Effective suppression of non‐radiative recombination caused by surface defects in perovskite is crucial for achieving high‐efficiency solar cells (PSCs). However, conventional passivators such as organic amine salts are prone to deprotonation amines and rapid reaction with formamidine, leading device degradation. Meanwhile, the solvent processing can also decompose layer due dissolution salts. In this work, an small molecule, 2‐Thiophenacetamide (TAM), features multiple active sites presented. TAM demonstrates ability passivate thin films through sublimation deposition. It demonstrated that solvent‐free method effect thiophene carbonyl group efficiently uncoordinated Pb 2+ , while amino aids stabilizing structures forming hydrogen bonds iodide ions. As a result, vapor treatment enhanced efficiency 25.33%, operational stability maintained at 95% original after continuous operation over 1000 h. Additionally, submodules area 14 cm 2 successfully assembled up 22.17%.

Язык: Английский

Процитировано

0
Nucleation Engineering to Strengthen Interface Contacts in Single‐Crystal Perovskite Photovoltaics DOI Open Access
Nianqiao Liu,

Mingxun Liu,

Jitao Dai

и другие.

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Perovskite solar cells (PSCs) based on single crystals hold potential for higher efficiency and stability, while the incomplete interface contact hinders hole carrier extraction device performance. Herein, we report strengthening crystal/substrate by nucleation engineering in situ growth strategy. Through modulating transport layer (HTL) to induce process at substrate surface, residual solution, voids, small-sized are eliminated, thus ensuring intimate physically. Combining with strong interaction between perovskites HTL, balanced electron/hole suppressed nonradiative recombination achieved. As a result, an impressive power conversion (PCE) of 25.8 % is obtained, setting new benchmark single-crystal PSCs. Moreover, thermal-induced peeling-off from substrates mitigated, which improves thermal stability distinctly.

Язык: Английский

Процитировано

0
Nucleation Engineering to Strengthen Interface Contacts in Single‐Crystal Perovskite Photovoltaics DOI Open Access
Nianqiao Liu,

Mingxun Liu,

Jitao Dai

и другие.

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Abstract Perovskite solar cells (PSCs) based on single crystals hold potential for higher efficiency and stability, while the incomplete interface contact hinders hole carrier extraction device performance. Herein, we report strengthening crystal/substrate by nucleation engineering in situ growth strategy. Through modulating transport layer (HTL) to induce process at substrate surface, residual solution, voids, small‐sized are eliminated, thus ensuring intimate physically. Combining with strong interaction between perovskites HTL, balanced electron/hole suppressed nonradiative recombination achieved. As a result, an impressive power conversion (PCE) of 25.8 % is obtained, setting new benchmark single‐crystal PSCs. Moreover, thermal‐induced peeling‐off from substrates mitigated, which improves thermal stability distinctly.

Язык: Английский

Процитировано

0
Minireview and Outlook of Carbazole and Phenothiazine-Modified Triphenylamines as Hole Transporting Materials for Enhancing Perovskite Solar Cells DOI

Rachel Chetri,

T.N. Ahipa

Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

Язык: Английский

Процитировано

0
Halogenated Chiral Organic Spacer Cation Regulation for Efficient and Stable 2D Ruddlesden‐Popper Perovskite Solar Cells DOI
Xin Li, Dong Xue,

Zihong Shen

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 20, 2025

Abstract 2D Ruddlesden‐Popper (2DRP) perovskites have emerged as promising candidates for next‐generation photovoltaic devices owing to their excellent environmental stability, moisture resistance, and photo‐stability. However, power conversion efficiencies (PCEs) still lag behind those of 3D counterparts, primarily due the poor charge‐carrier transport associated with insulating bulky organic spacer cations. In this work, a series halogenated chiral spacers– S ‐ α ‐fluorophenylethylamine acrylate ( ‐α‐FPEAAA), ‐α‐chlorophenylethylamine ‐α‐ClPEAAA), S‐α‐bromophenylethylamine ‐α‐BrPEAAA)–are employed regulate charge within 2DRP framework. Incorporating halogen atoms facilitates halogen–halogen interactions between spacers PbI 6 4− octahedral framework, thereby enhancing structural ordering electronic coupling. Among these, ‐α‐BrPEAAA‐based exhibit superior film morphology, improved crystallinity, an exceptional carrier lifetime 3.353 µs. Notably, inverted perovskite solar cell based on ‐α‐BrPEAAA achieves high PCE 20.30%, rivaling best‐performing systems reported recently. Moreover, device demonstrates long‐term retaining over 95% initial efficiency after 2000 h storage under nitrogen atmosphere. These findings highlight potential in advancing high‐performance stable photovoltaics.

Язык: Английский

Процитировано

0