Related references
Note: Only part of the references are listed.
Review
Materials Science, Multidisciplinary
Fei Wang et al.
Summary: Over the past decade, perovskite photovoltaics have shown great promise as the most prospective type of solar cells. However, there are still debates regarding their surface degradation, mechanical robustness, and environmental impact. The application of ionic liquids appears to be a potential solution to these challenges.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
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Bonan Shi et al.
Summary: Large quantities of defects on the surface and grain boundary of perovskite films can lead to nonradiative recombination of photogenerated carriers and degrade the performance of perovskite solar cells (PSCs). Surface passivation with an organic molecule, 4-chloro-1,8-naphthalic anhydride (ALS), is effective in suppressing the detrimental effects of defects and improving the performance of PSCs. ALS provides lone pair electrons to undercoordinated Pb2+ and passivates this defect. The passivated perovskite films have lower trap state density and longer carrier lifetime, resulting in an improved photoelectric conversion efficiency (PCE) of the PSCs from 21.52% to 23.72%. Furthermore, the ALS passivated PSCs exhibit good stability, maintaining 88% of their initial efficiency after 1200 hours of storage in ambient atmosphere without encapsulation.
ADVANCED MATERIALS INTERFACES
(2023)
Article
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Chongyang Zhi et al.
Summary: Interface passivation using an ammonium salt improves the power conversion efficiency of perovskite solar cells. A machine-learning method is used to investigate the relationship between the molecular features of ammonium salts and the efficiency improvement. Hydrogen bond donor, hydrogen atom, and octane-water partition coefficient are identified as important features for selecting an ammonium salt. The ML model is used to screen salts and achieves high PCEs for FAMACs and FAMA-based PSCs.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Mayur Jagdishbhai Patel et al.
Summary: In order to enhance the performance of hybrid organic inorganic perovskite solar cells (HOIP-SCs), it is important to minimize intrinsic defect states and improve film quality. Incorporating an imidazolium containing cationic conjugated poly electrolyte (CPE), PFBT-MI, effectively passivated the ionic defects in the perovskite structure, resulting in improved film morphology and charge transport. The 1% doped perovskite device achieved the highest power conversion efficiency (PCE) of 19.23% compared to the pristine device, and the bromide ion counterion reduced hysteresis and improved long-term stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
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Lei Ning et al.
Summary: The utilization of TFEMA as a defect passivation agent and in situ polymerization strategy in perovskite solar cells successfully repaired detrimental defects on the surface and grain boundaries, resulting in enhanced device performance and stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Ritesh Kant Gupta et al.
Summary: This study demonstrates the use of trifluoro acetic acid (TFAA) as an additive to improve the efficiency and stability of hybrid perovskite solar cells (PSCs). TFAA interacts with perovskites to passivate defect states, resulting in enhanced device performance. Various experimental techniques were used to confirm the improvement in efficiency and stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
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Rabindranath Garai et al.
Summary: By using an advanced triple passivation technique with UV-absorbing BP molecules, the stability of perovskite solar cells is significantly improved, leading to a high power conversion efficiency and enhanced carrier transport. This approach effectively shields the perovskite layer from UV irradiation and moisture, demonstrating impressive UV and ambient stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Siraj Sidhik et al.
Summary: Realizing solution-processed heterostructures in halide perovskites is a long-standing challenge due to solvent incompatibilities. However, by utilizing the solvent dielectric constant and Gutmann donor number, it is possible to grow phase-pure two-dimensional (2D) halide perovskite stacks with desired composition, thickness, and bandgap onto 3D perovskites without dissolving the underlying substrate. The thickness dependence of the 2D perovskite layer shows expected trends for different device architectures, indicating the influence of band alignment and carrier transport limits.
Review
Chemistry, Physical
Ali Hassan et al.
Summary: Hybrid lead halide perovskite photovoltaics have surpassed thin-film solar cells in terms of efficiency within a decade. However, defects related to undercoordinated ions, band offsets, grain boundaries, photocurrent hysteresis, and environmental instability have hindered the industrialization of perovskite photovoltaics. This comprehensive review provides insights into the nature, source, correlation, and effects of these defects, as well as strategies for defect passivation. Suggestions for next-generation perovskite solar cells are also recommended.
Article
Energy & Fuels
Ritesh Kant Gupta et al.
Summary: This study investigates the passivation of defects in perovskite solar cells (PSCs) using two fluorinated organic additives. The results show that the incorporation of these additives significantly improves the efficiency and stability of PSCs, demonstrating the potential of functional organic molecules in enhancing PSC performance.
Article
Chemistry, Multidisciplinary
Yali Chen et al.
Summary: A dual-functional method is proposed to simultaneously passivate trap defects in perovskite and ETL films by utilizing Eu3+ in SnO2, leading to significant improvement in electron mobilities of ETLs and open-circuit voltage of PSCs. The PSCs coated on SnO2:Eu3+ ETL achieve a high power conversion efficiency of 20.14% and show minimal degradation when exposed to ambient atmosphere for 84 days.
Article
Chemistry, Physical
Mohammad Adil Afroz et al.
Summary: Passivation of trap states using multiple carboxylic acid-functionalized small aromatic molecules improves the performance and stability of perovskite solar cells. Devices incorporating BTCA exhibit the highest power conversion efficiency and open-circuit voltage, along with enhanced thermal stability.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
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Bing Wang et al.
Summary: This study successfully enhanced the performance of perovskite solar cells by passivating defects and modulating energy level alignment at the interface using polar chlorine-terminated silane molecules.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
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Rabindranath Garai et al.
Summary: In this study, the novel conjugated polyelectrolyte PHIA was investigated for perovskite passivation, resulting in significantly reduced trap states, lesser recombination, and a high power conversion efficiency of 20.17%. The passivation approach also improved long-term device stability, with a large-area device demonstrating potential for future commercialization.
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(2021)
Article
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Summary: Controlling the morphology of perovskite to achieve large-sized grains with small-width grain boundaries is crucial for high photovoltaic performance. The incorporation of MABr into mixed halide perovskite effectively minimizes ion migration and results in high-quality films with large grains. The addition of MABr improved the power conversion efficiency of the perovskite solar cells, with the 0.1MABr ratio showing the best performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
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Ritesh Kant Gupta et al.
Summary: Dual-passivation of MAPbI(3)-based perovskite using PTSA in the bulk and hydrophobic PS at the surface significantly reduces trap-density, improves device performance, and enhances PCE. The dual-passivation improves perovskite crystallinity, grain size, and reduces trap-density, resulting in higher photogenerated charges and better charge transport. The modified device retains 93% of the original PCE after 1000 hours under ambient conditions.
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(2021)
Article
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Rabindranath Garai et al.
Summary: Organic-inorganic hybrid perovskite solar cells have seen rapid efficiency improvements recently, but their commercialization is hindered by instability towards ambient conditions. The formation of a thin layer of 2D perovskite over a 3D structure has enhanced stability and efficiency. Surface treatment with a strategically synthesized multifunctional molecule has led to outstanding efficiencies and improved ambient stability for perovskite solar cells.
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Summary: A study identified an improvement method for perovskite solar cells, where adding a cancer drug as a passivation agent significantly increased the efficiency and long-term stability of the cells.
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Summary: Fluoroaromatic amine additives were used to passivate hybrid perovskite solar cells, significantly enhancing their stability and efficiency. Among these additives, PFA showed the most remarkable improvement in both moisture and thermo-stability of the devices.
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