Boosting the Performance of Carbon‐Based Hole‐Transport‐Layer‐Free CsPbI2Br Solar Cells by Adding Imidazole Small Molecules DOI
Hai Liu, Xueyan Ma, Wenxuan Li

et al.

Progress in Photovoltaics Research and Applications, Journal Year: 2025, Volume and Issue: unknown

Published: May 10, 2025

ABSTRACT Carbon‐based hole‐transport‐layer (HTL)‐free CsPbI 2 Br solar cells have attracted considerable interest due to the improved stability, simple structure, rich application scenarios, and low cost, as compared with their organic–inorganic hybrid counterparts. However, uncoordinated Pb 2+ mobile I − ions impose challenges for fabricating a cell good comprehensive performance. To address related issues, herein, we introduce facile additive strategy using an organic small molecule material, i.e., 1H‐imidazole‐4‐carboxylic acid (ICA), improve performance of carbon‐based HTL‐free cells. Benefitting from effective passivation anchoring , well increased crystallinity reduced surface roughness layers by ICA, optimal delivers power conversion efficiency (PCE) 14.71%, ⁓24.7% increment relative PCE 11.80% control device without ICA addition. Moreover, ICA‐added exhibits evidently hysteresis current–voltage characteristics notably enhanced in contrast device.

Language: Английский

Precisely‐Controlled Co‐Self‐Assembled Monolayer for Improved Performance of Blade‐Coated Perovskite Solar Cells DOI

Ruiqin He,

Xuesong Liu, Tanghao Liu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract Self‐assembled monolayers (SAMs) have achieved remarkable success in the realm of inverted perovskite solar cells (PSCs). The integration two distinct SAMs, referred to as co‐SAM, significantly broadens diversity within SAM family and propels enhancement PSC performance. In this study, a co‐SAM consisting [4‐(3,6‐dimethoxy‐9H‐carbazol‐9‐yl)butyl] phosphonic acid (MeO‐4PACz) [2‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl) ethyl] (Me‐2PACz) is sequentially deposited achieve precisely controlled nanostructure. It unveiled that initial deposition step governs surface wettability, whereas subsequent dictates energy level alignment. Leveraging meticulously regulated blade‐coated attains an impressive efficiency 25.01%, retains 95.4% its after 2500 h under illumination, maintains 86.7% ≈2000 at 85 °C. This research delineates novel pathway facilitate large‐scale manufacturing PSCs.

Language: Английский

Citations

0
Boosting the Performance of Carbon‐Based Hole‐Transport‐Layer‐Free CsPbI2Br Solar Cells by Adding Imidazole Small Molecules DOI
Hai Liu, Xueyan Ma, Wenxuan Li

et al.

Progress in Photovoltaics Research and Applications, Journal Year: 2025, Volume and Issue: unknown

Published: May 10, 2025

ABSTRACT Carbon‐based hole‐transport‐layer (HTL)‐free CsPbI 2 Br solar cells have attracted considerable interest due to the improved stability, simple structure, rich application scenarios, and low cost, as compared with their organic–inorganic hybrid counterparts. However, uncoordinated Pb 2+ mobile I − ions impose challenges for fabricating a cell good comprehensive performance. To address related issues, herein, we introduce facile additive strategy using an organic small molecule material, i.e., 1H‐imidazole‐4‐carboxylic acid (ICA), improve performance of carbon‐based HTL‐free cells. Benefitting from effective passivation anchoring , well increased crystallinity reduced surface roughness layers by ICA, optimal delivers power conversion efficiency (PCE) 14.71%, ⁓24.7% increment relative PCE 11.80% control device without ICA addition. Moreover, ICA‐added exhibits evidently hysteresis current–voltage characteristics notably enhanced in contrast device.

Language: Английский

Citations

0