Boosting Photovoltaic Efficiency: The Role of Functional Group Distribution in Perovskite Film Passivation DOI Open Access
Qingquan He,

Shicheng Pan,

Tao Zhang

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

The utilization of small organic molecules with appropriate functional groups and geometric configurations for surface passivation is essential achieving efficient stable perovskite solar cells (PSCs). In this study, two isomers, 4-sulfonamidobenzoic acid (4-SA) 3-sulfamobenzoic (3-SA), both featuring sulfanilamide carboxyl arranged in different positions, are evaluated their effectiveness passivating defects the layer. calculation characterization results reveal that 3-SA, its meta-substitution, offered superior compared to para-substituted 4-SA, leading enhanced charge carrier dynamics extraction efficiency. devices treated 3-SA demonstrates a notable increase power conversion efficiency from 21.50% 23.30%. Moreover, these maintain over 90% initial after 2000 h 30% relative humidity environment, showcasing exceptional long-term stability. This research advances strategic design approaches molecule passivation, providing critical insights enhancement optoelectronic applications.

Language: Английский

Ionic liquid additive in ionic-liquid-based MAPbI3 perovskite ink: Improved film crystallization and device performance in ambient air processed solar cells DOI

Saeed Rajabzade,

Karim Abdizadeh,

Farzaneh Aghakhani Mahyari

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 630, P. 236134 - 236134

Published: Jan. 5, 2025

Language: Английский

Citations

1
Suppressing the Bottom Small n Phases of Quasi-2D Perovskites for High-Performance Photovoltaic Applications DOI
W. B. Qian, Shijie Dai, Haoliang Wang

et al.

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

Published: March 5, 2025

The bottom small n phases in quasi-two-dimensional (Q-2D) perovskite films significantly hinder their photovoltaic performance development due to severely low conductivity and nonideal band alignment the corresponding solar cells. In this study, we successfully suppressed growth of Q-2D Ruddlesden-Popper (RP) (BA2MA4Pb5I16, ⟨n⟩ = 5) by introducing 2,7-bis(diphenylphosphoryl)-9,9'-spirobifluorene (SPPO13) as an additive into precursor solution. It is interesting find that hole transport layer poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) our p-i-n device can attract SPPO13 π-π stacking effect. As a result, concentrates at bottom, coordination between PbI2 leads more [PbI6]4- octahedra gathering downside film. Thereby, large remain unwanted are suppressed. optimized achieves remarkable power conversion efficiency 18.41%, which, according knowledge, highest value for BA-MA-based perovskite. Moreover, also demonstrates outstanding stability, maintaining 99.5% 95.3% initial after being stored over 3500 h under maximum point tracking operation 400 h, respectively. Unlike conventional methods primarily address bulk or interface properties, approach uniquely combines effects defect passivation through phosphine oxide groups, leading enhanced crystallinity, vertical orientation, nonradiative recombination. This work provides new regulate n-phase promote behavior

Language: Английский

Citations

1
Stable Surface Contact with Tailored Alkylamine Pyridine Derivatives for High‐Performance Inverted Perovskite Solar Cells DOI Open Access

Sanwan Liu,

Zhenxing Sun, X. Lei

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 16, 2024

Abstract Formamidinium‐cesium lead triiodide (FA 1‐x Cs x PbI 3 ) perovskite holds great promise for solar cells (PSCs) with both high efficiency and stability. However, the defective surfaces induced by defects residual tensile strain largely limit photovoltaic performance of corresponding devices. Here, passivation capability alkylamine‐modified pyridine derivatives surface FA is systematically studied. Among studied passivators, 3‐(2‐aminoethyl)pyridine (3‐PyEA) suitable size demonstrated to be most effective in reducing iodine impurities (V I 2 through its strong coordination N . Additionally, tail amino group (─NH from 3‐PyEA can react + cations reduce roughness films, reaction products also passivate vacancies ), further strengthen their binding interaction surfaces. These merits suppressed nonradiative recombination loss, release stress a favorable energy‐level alignment at perovskite/[6,6]‐phenyl‐C 61 ‐butyric acid methyl ester interface. Consequently, resulting inverted PSCs obtain an impressive power conversion (PCE) 25.65% (certified 25.45%, certified steady‐state 25.06%), along retaining 96.5% initial PCE after 1800 h 1‐sun operation 55 °C air.

Language: Английский

Citations

8
Crystallization regulation strategy by using 4,4'-cyclohexylidenebis(N, N-bis(p-tolyl)aniline) for high-performance air-processed perovskite photodetectors and solar cells DOI
Guo He, Dezhi Yang, Jiangshan Chen

et al.

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 189, P. 109289 - 109289

Published: Jan. 13, 2025

Language: Английский

Citations

0
Enhanced UV Stability of Perovskite Solar Modules via Downshifting Luminescent Organic–Inorganic Copper Halide Film with Near‐Unity Efficiency DOI Open Access
Zhe Liu,

Zheng Liu,

Liangliang Deng

et al.

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 14, 2025

Abstract Obtaining efficient perovskite solar modules (PSMs) with enhanced UV stability is essential for their practical applications, yet remains a significant challenge. In this work, highly organic–inorganic copper halide downshifting film that significantly enhances the of PSMs demonstrated by converting high‐energy harmful photons into beneficial visible light contribute to photovoltaic performance. The tetrapropylammonium (TPA) cation selected as main framework synthesize series halides, denoted Br x I y . A near‐unity photoluminescence quantum yield (PLQY) 99.51% can be achieved precisely controlling Br/I ratio 2:4, 2 4 , which one highest values reported date. dual self‐trapped excitons (STEs) luminescence mechanism systematically investigated both temperature‐dependent and pressure‐dependent experiments. This dual‐STEs enables efficiently absorb re‐emit photons, thereby mitigating photodegradation induced light. Finally, effective layer. an optimal efficiency 22.24%, maintaining over 90% initial after exposure total dose 66.07 kWh m −2

Language: Английский

Citations

0
Stabilizing Precursor Solutions by Proton‐Rich Additive for High‐Performance Air‐Processed Solar Cells DOI Open Access
Kongxiang Wang,

Zhongtao Duan,

Hong Liu

et al.

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

Published: March 10, 2025

Storing perovskite precursor solutions under ambient conditions poses a significant challenge to commercialization, as humidity and oxidation accelerate ageing introduce defects in devices. A major contributor solution impurity phases is the deprotonation of hybrid organic cations, specifically methylammonium (MA+) formamidinium (FA+). In this work, proton-rich additive, 4-(aminomethyl)pyridine 2-iodide, used inhibit MA+ by generating free H+, thereby mitigating degradation cations oxygen stress. The treated stored for several days exhibits no condensation reaction products. Due synergistic effect H+ I-, films exhibit pure phase formation abnormal "aggregate" crystals. Therefore, additive reacts with FA+ form new complexes, termed N-(4-methylpyridine)formamidinium), which efficiently passivate nonradiative defects. Consequently, strategy enables solar cells achieve power conversion efficiency (PCE) 25.25%, demonstrating enhanced long-term stability both light thermal Notably, optimized device retains 95.5% its initial PCE after 1200 h continuous illumination 91.61% 600 at 85 °C 85% relative humidity.

Language: Английский

Citations

0
High‐Oriented SnO2 Nanocrystals for Air‐Processed Flexible Perovskite Solar Cells with an Efficiency of 23.87% DOI
Lei Ning,

Zhengzheng Yao,

Leying Zha

et al.

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

Published: April 16, 2025

Abstract Tin (IV) oxide (SnO 2 ) electron transport layer (ETL) emerges as the most promising n‐type semiconductor material for flexible perovskite solar cells (f‐PSCs). The (110) facet‐dominated SnO colloids are readily created, whereas other best‐performing (101) and (200) facets‐dominated ones with superior potential in interface modulation lattice matching remain insufficiently explored. Here water‐soluble acryloyloxyethyltrimethyl ammonium chloride‐acrylamine (DAC‐AA) doping into produces more (101)‐ (200)‐oriented crystal domains through lowering surface absorption energy offering additional thermodynamic driving force. Theoretical experimental analyses corroborate that grain preference orientation induced by DAC‐AA modification strengthens heating transfer rate on substrate favors of (100) plane facets. Accordingly, champion f‐PSCs high‐oriented ‐DAC‐AA ETLs fabricated fully ambient air conditions achieve efficiencies 23.87% 22.41% aperture areas 0.092 1 cm . In parallel, propitious interfacial arrangement attenuates formation micro‐strain inside films, maintaining 92.5% their initial performance after 10 000 bending cycles a curvature radius 6 mm.

Language: Английский

Citations

0
Boosting Photovoltaic Efficiency: The Role of Functional Group Distribution in Perovskite Film Passivation DOI Open Access
Qingquan He,

Shicheng Pan,

Tao Zhang

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

The utilization of small organic molecules with appropriate functional groups and geometric configurations for surface passivation is essential achieving efficient stable perovskite solar cells (PSCs). In this study, two isomers, 4-sulfonamidobenzoic acid (4-SA) 3-sulfamobenzoic (3-SA), both featuring sulfanilamide carboxyl arranged in different positions, are evaluated their effectiveness passivating defects the layer. calculation characterization results reveal that 3-SA, its meta-substitution, offered superior compared to para-substituted 4-SA, leading enhanced charge carrier dynamics extraction efficiency. devices treated 3-SA demonstrates a notable increase power conversion efficiency from 21.50% 23.30%. Moreover, these maintain over 90% initial after 2000 h 30% relative humidity environment, showcasing exceptional long-term stability. This research advances strategic design approaches molecule passivation, providing critical insights enhancement optoelectronic applications.

Language: Английский

Citations

0