In Situ Impurity Phase Repair Strategy Enables Highly‐Efficient Perovskite Solar Cells with Periodic Photovoltaic Performance DOI
Min Li, Yulin Xie, Long Luo

et al.

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

Published: April 13, 2025

Abstract The photoactive α‐phase of formamidinium lead iodide perovskite (α‐FAPbI 3 ) is regarded as one the ideal materials for high‐efficiency solar cells (PSCs) due to its superior optoelectronic properties. However, during deposition α‐FAPbI films, presence impurity phases, such PbI 2 and δ‐FAPbI , can cause formation inherent defects, which leads suboptimal charge transport extraction properties, well inadequate long‐term stability in film's morphology structure. To address these issues, an phase repair strategy employed using FAI/MASCN mixed vapors convert phases into light‐absorbing . Meanwhile, this recrystallization process also facilitates recovery characteristic morphology, thereby improving efficiency enhancing durability PSCs. This approach promotes PSCs obtain 26.05% (with a certified 25.67%, steady‐state PCE 25.41%). Additionally, suitable fabrication large‐area devices, obtaining 1 cm device with 24.52% mini‐module area 17.1 22.35%. Furthermore, it found that enables cyclic aged retaining ≈ 94.3% their initial after two cycles repair, significantly lifetime cells.

Language: Английский

Dual Interface Passivation With Multi‐Site Regulation Toward Efficient and Stable Inverted Perovskite Solar Cells DOI Open Access
Kunpeng Li, Yong Han, Xinlong Zhao

et al.

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

Published: Feb. 23, 2025

Abstract The rapid crystallization process of perovskite produces a large number defects that remain critical factor disturbs the performance solar cells (PSCs). In this research, these challenges are mitigated by introducing multifunctional 2,6‐pyridinedicarboxylic acid chloride (PAC) as an additive into perovskite. During thermal annealing process, predominant accumulation PAC occurs at upper and buried interfaces film. possesses multiple passivating sites facilitate anchoring lead iodine defects, thereby enhancing quality material across both its dual grain boundaries. With unique property, combined with advantages enhanced crystallization, reduced non‐radiative recombination, boosted charge carrier mobility, optimal energy level alignment, PSC achieved power conversion efficiency (PCE) 25.60% maintained more than 90% after 3000 h under one equivalent light 1400 dark high temperature (85 °C). interface passivation strategy provides sustainable solution to stability environmental for commercialization cells.

Language: Английский

Citations

2
Radical Molecular Network‐Buffer Minimizes Photovoltage Loss in FAPbI₃ Perovskite Solar Cells DOI
Mubai Li, Yang Jiang, Shaoyu Chen

et al.

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

Published: Feb. 24, 2025

Abstract Formamidinium lead iodide (FAPbI₃) perovskite solar cells (PSCs) hold immense potential for high‐efficiency photovoltaics, but maximizing their open‐circuit voltage ( V OC ) remains challenging. Targeting the inherently stable {111} c ‐dominant facets is a promising approach enhancing stability, formation typically suffers from high defect densities and disordered growth. This study introduces novel using an in situ polymerizable radical molecule, ATEMPO, as additive to address these issues. ATEMPO preferentially interacts with facets, guiding growth forming “radical molecular network‐buffer” upon polymerization. The network effectively mitigates lattice strain, suppresses formation, enhances charge transport via redox‐mediated hopping, provides hydrophobic barrier, significantly improving moisture resistance. strategy yields high‐quality, ‐oriented FAPbI₃ films, leading champion PCE of 25.28% remarkably 1.203 V, corresponding energy loss E only 0.297 eV, among highest reported FAPbI₃‐based PSCs. Furthermore, mini‐module fabricate active area 12.5 cm 2 achieve 21.39%. work paves way developing high‐performance, PSCs minimized photovoltage loss. it offers enhance device longevity environmental concerns.

Language: Английский

Citations

1
Dual-stage Crystallization Regulation for Efficient and Stable Perovskite Solar Cells DOI

Zhuoyuan Kong,

Shuo Ding, Ming Cai

et al.

Materials Today Energy, Journal Year: 2025, Volume and Issue: unknown, P. 101836 - 101836

Published: Feb. 1, 2025

Language: Английский

Citations

0
Enhancing α-FAPbI3 Crystallization and Photovoltaic Performance through Inhibiting MFA Formation DOI
Congtan Zhu, Yuejun Wang,

Weihuang Lin

et al.

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

Published: Feb. 27, 2025

Methylammonium chloride (MACl) additive is almost irreplaceable in high-performance formamidinium (FA) perovskite photovoltaics. However, the byproduct of methyl (MFA+) from reaction MA0 and FA damages compositional purity phase stability α-FAPbI3. The addition iodine (I2) to FAPbI3 precursor has been reported inhibit formation MFA+. Here, we systematically investigate effect MAI on films devices by using replace MACl I2. results demonstrate that produces more I3- precursor, which inhibits between MA thus blocks Meanwhile, MFA+ reduced due delayed evaporation caused its strong interaction with I3-, facilitating growth α-FAPbI3 an improved bottom morphology. It eliminates unreacted PbI2, forming a homogenized phase, facilitates ordered along (111) facet, enhancing charge transport increasing open-circuit voltage (VOC). optimized device shows 2% improvement PCE, VOC 1.050 1.103 V. Additionally, target retains 97% initial performance after 5495 min operation under maximum power point tracking, compared 82.3% 2000 for control device. This work provides insights into inhibiting byproducts induced MA-FA side following introduction MACl.

Language: Английский

Citations

0
Advancements and Prospects for eco-friendly, high-performance silver bismuth halide solar cells DOI Creative Commons
Natalia B. Correa Guerrero, M. Dolores Perez, Naoyuki Shibayama

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

We introduce the current challenges, improvement strategies, and future prospects of lead-free solar cells using silver bismuth halide, which is expected to be a promising candidate for high-efficiency cells.

Language: Английский

Citations

0
Mitigating Face‐Sharing Octahedral Impurity Phases for Efficient FA‐Based Perovskite Photovoltaics DOI Open Access

Hanfeng Liu,

Baochao Zheng, Xingtao Wang

et al.

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

Published: March 3, 2025

Abstract Formamidinium (FA) based perovskites have emerged as one of the most promising light‐absorber layers for both single‐junction and advanced top‐cell tandem photovoltaics, owing to their precisely engineered electronic bandgap exceptional stability. However, because mismatch FA cation intricate crystallization FA‐based perovskite, formation an impurity phase is inevitable, which reduces efficiency Herein, a N‐Phenyl‐bis(trifluoromethanesulfonimide) (NPTFSI)‐assisted method presented mitigate phase, i.e., face‐sharing octahedra, achieve pure stable perovskite. Comprehensive characterization shows that addition NPTFSI increases energy octahedra while reducing corner‐sharing. This effectively suppresses in perovskite films. Suppressing these octahedral phases not only enhances stability films under heating or humidity conditions but also improves carrier dynamics. Finally, champion devices deliver significantly enhanced from 23.23% 25.74%. Moreover, PSCs exhibit excellent stability: retain 96% initial after over 500 h maximum power point test.

Language: Английский

Citations

0
In Situ Impurity Phase Repair Strategy Enables Highly‐Efficient Perovskite Solar Cells with Periodic Photovoltaic Performance DOI
Min Li, Yulin Xie, Long Luo

et al.

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

Published: April 13, 2025

Abstract The photoactive α‐phase of formamidinium lead iodide perovskite (α‐FAPbI 3 ) is regarded as one the ideal materials for high‐efficiency solar cells (PSCs) due to its superior optoelectronic properties. However, during deposition α‐FAPbI films, presence impurity phases, such PbI 2 and δ‐FAPbI , can cause formation inherent defects, which leads suboptimal charge transport extraction properties, well inadequate long‐term stability in film's morphology structure. To address these issues, an phase repair strategy employed using FAI/MASCN mixed vapors convert phases into light‐absorbing . Meanwhile, this recrystallization process also facilitates recovery characteristic morphology, thereby improving efficiency enhancing durability PSCs. This approach promotes PSCs obtain 26.05% (with a certified 25.67%, steady‐state PCE 25.41%). Additionally, suitable fabrication large‐area devices, obtaining 1 cm device with 24.52% mini‐module area 17.1 22.35%. Furthermore, it found that enables cyclic aged retaining ≈ 94.3% their initial after two cycles repair, significantly lifetime cells.

Language: Английский

Citations

0