Bulky Cation-Modified Interfaces for Thermally Stable Lead Halide Perovskite Solar Cells DOI Creative Commons

Sakshi Sharma,

Carlo A. R. Perini,

Courtney Brea

и другие.

Chemistry of Materials, Год журнала: 2025, Номер 37(10), С. 3676 - 3684

Опубликована: Май 15, 2025

Charged conjugated organic molecules offer promising prospects for reducing nonradiative recombination at interfaces in perovskite solar cells, while protecting the active layer from moisture. However, several studies have shown that heat-induced diffusion of these cations leads to irreversible cell degradation. Passivation can reconstruct film surface into lower-dimensional phases when exposed thermal stress, impeding charge extraction and affecting photoconversion efficiency (PCE) devices. In this work, we study how molecular interactions between passivation 3D CsFAPbI3 impact stability perovskite/hole transport interfaces. Two model π-conjugated are studied: 2-([2,2'-bithiophen]-5-yl)-ethan-1-aminium iodide (2TI) 2-(3‴,4'-dimethyl-[2,2':5',2″:5″,2‴-quaterthiophen]-5-yl)-ethan-1-ammonium (4TmI). We demonstrate speed reconstruction under stress be controlled by cation size correlate structural changes with performance stability. Devices treated 2TI 4TmI achieve PCEs over 21% maintain their stress. Our findings PSCs achieved via design engineering agents, offering a blueprint developing next-generation molecules.

Язык: Английский

2D/3D heterojunction engineering for hole transport layer‐free carbon‐based perovskite solar cells DOI Open Access

Lingcong Li,

Yinlong Lai, Huashang Rao

и другие.

ChemSusChem, Год журнала: 2025, Номер unknown

Опубликована: Янв. 24, 2025

Hole transport layer (HTL)-free carbon-based perovskite solar cells (C-PSCs) own outstanding potential for commercial applications due to their attractive advantages of low cost and superior stability. However, the abundant defects mismatched energy levels at interface perovskite/carbon electrode severely limit device efficiency Constructing a 2D on surface 3D films form 2D/3D heterojunctions has been demonstrated be an effective method passivating optimizing level alignment in almost all kinds PSCs. Due unique structure HTL-free C-PSCs, play especially important roles. This review article summarizes reports C-PSCs. It describes contributions terms roles defect passivation, optimization, stability improvement. Finally, challenges prospects heterojunction further development C-PSCs are highlighted.

Язык: Английский

Процитировано

1
Ligand-Mediated Surface Reaction for Achieving Pure 2D Phase Passivation in High-Efficiency Perovskite Solar Cells DOI
Zhuojie Shi, Shunchang Liu,

Ran Luo

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер unknown

Опубликована: Дек. 19, 2024

The surface passivation with the heterostructure of 2D/3D stack has been widely used for boosting efficiency n-i-p perovskite solar cells (PSCs). However, disordered quantum well width distribution 2D perovskites leads to energy landscape inhomogeneity and crystalline instability, which limits further development PSCs. Here, a versatile approach, ligand-mediated passivation, was developed produce phase-pure layer homogeneous by dual-ligand codeposition. preferential adsorption 3,6-dimethyl-carbazole-9-ethylammonium iodide large molecular size lower could regulate reaction between

Язык: Английский

Процитировано

6
Intramolecular hydrogen bonds assist in controlling the quantum well distribution in quasi-2D perovskites for efficient pure-blue perovskite light-emitting diodes DOI

Zixun Tang,

Yuhang Guo,

Zexu Li

и другие.

Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Use of an o -F-PEABr ligand containing intramolecular hydrogen bond can effectively suppress low- n phases in quasi-2D perovskites. The resultant light-emitting diodes achieve a maximum efficiency 7.55% and pure blue emission at 475 nm.

Язык: Английский

Процитировано

0
Bulky Cation-Modified Interfaces for Thermally Stable Lead Halide Perovskite Solar Cells DOI Creative Commons

Sakshi Sharma,

Carlo A. R. Perini,

Courtney Brea

и другие.

Chemistry of Materials, Год журнала: 2025, Номер 37(10), С. 3676 - 3684

Опубликована: Май 15, 2025

Charged conjugated organic molecules offer promising prospects for reducing nonradiative recombination at interfaces in perovskite solar cells, while protecting the active layer from moisture. However, several studies have shown that heat-induced diffusion of these cations leads to irreversible cell degradation. Passivation can reconstruct film surface into lower-dimensional phases when exposed thermal stress, impeding charge extraction and affecting photoconversion efficiency (PCE) devices. In this work, we study how molecular interactions between passivation 3D CsFAPbI3 impact stability perovskite/hole transport interfaces. Two model π-conjugated are studied: 2-([2,2'-bithiophen]-5-yl)-ethan-1-aminium iodide (2TI) 2-(3‴,4'-dimethyl-[2,2':5',2″:5″,2‴-quaterthiophen]-5-yl)-ethan-1-ammonium (4TmI). We demonstrate speed reconstruction under stress be controlled by cation size correlate structural changes with performance stability. Devices treated 2TI 4TmI achieve PCEs over 21% maintain their stress. Our findings PSCs achieved via design engineering agents, offering a blueprint developing next-generation molecules.

Язык: Английский

Процитировано

0