Related references
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Article
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Summary: Achieving long-term stability is the key challenge for widespread commercialization of perovskite solar cells. This study introduces a high-temperature dimethyl-sulfoxide-free processing method to control the crystallization of perovskite films, effectively improving the material quality and operational stability of the devices. The encapsulated devices showed improved lifetimes, with a median T80 of 1,190 hours and a champion device reaching a T80 of 1,410 hours.
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Summary: The use of small molecules, including ethylenediaminetetraacetic acid (EDTA) and its derivatives, to functionalize the zinc oxide (ZnO) interlayers at the SnO2/CsPbI2Br buried interface improves the photovoltaic performance of low-temperature carbon-based inorganic perovskite solar cells (C-IPSCs). This strategy simultaneously repairs defects in ZnO and perovskite films, adjusts interfacial energy level alignment, and enhances interfacial contact, inhibiting ion migration, reducing charge recombination, and promoting electron transport.
Article
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Yansen Sun et al.
Summary: In this study, a synergistic passivation strategy was developed to improve perovskite device performance by repairing the perovskite films and bilateral interfaces. Firstly, SnO2 electron transport layer (ETL) was modified using an appropriate amount of phenylethylammonium chloride. Then, N,N'-Bis-(1-naphthalenyl)-N,N'-bis-phenyl(1,1'-biphenyl)-4,4'-diamine (NPB) was introduced during the preparation of perovskite films to further regulate crystal quality. The obtained devices showed reduced hysteresis and enhanced long-term stability.
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Summary: The 2D perovskite substrate-assisted growth (2D-PSAG) method is proposed for optimizing CsPbI3 perovskite films, leading to improved crystallization quality and enhanced performance and stability of perovskite solar cells (PSCs). The method involves using a 2D perovskite substrate to fabricate high-quality CsPbI3 films, resulting in a bottom-up phase transition and improved energy-level alignment at the perovskite layer/hole transport layer interface. PSCs made with the 2D-PSAG method exhibit a higher champion efficiency and improved stability compared to control devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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Summary: In this study, a multifunctional interfacial material, BGCl, was introduced to modify the interface of perovskite solar cells. The BGCl improved electron extraction and crystal growth of perovskite by chemically linking to SnO2 and anchoring PbI2. This modification led to better energetic alignment, reduced interfacial defects, and homogeneous perovskite crystallites, resulting in highly efficient and stable performance.
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Yang Zhang et al.
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ACS ENERGY LETTERS
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Dongfang Xu et al.
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Summary: This article reviews the key advancements in SnO2 development for perovskite solar cells, including different deposition methods and surface treatment strategies to enhance its performance. The general materials chemistry of SnO2 and the associated challenges and improvement strategies are discussed, with a focus on its impact on device characteristics. The article also highlights the applications of SnO2 in scalable processes and flexible devices, and provides perspectives on the future development of large-scale perovskite solar modules.
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Yansong Ge et al.
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Hui Zhang et al.
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Zhixiao Qin et al.
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Hongru Ma et al.
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Yang Zhao et al.
Summary: In halide perovskite solar cells, introducing RbCl doping effectively stabilizes the perovskite phase by converting excess PbI2 into an inactive compound. This strategy achieved a certified PCE of 25.6% for FAPbI(3) perovskite solar cells, with high device stability and minimal hysteresis effects.
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Sheng Zhan et al.
Summary: In this study, a bifunctional passivator, MBrA, was designed and used to modify FAMAPbI(3) perovskite material, reducing defect density, tuning energy levels, and improving the efficiency and stability of the solar cell.
ADVANCED ENERGY MATERIALS
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Dhruba B. Khadka et al.
Summary: This study introduces a new technique of interfacial passivation with pentafluorophenylhydrazine (5F-PHZ) to enhance the performance and stability of perovskite solar cells (PSCs). The surface treatment with 5F-PHZ improves the film chemistry and increases the carrier lifetime, resulting in a higher power conversion efficiency. This approach is effective for both narrow and wide bandgap perovskite systems.
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Hao Huang et al.
Summary: In this research, a ligand-engineered deposition strategy was proposed to improve the performance of planar perovskite solar cells. By using tartaric acid as the ligand, particle aggregation was effectively inhibited, and the interfacial contact impedance was reduced while the electron extraction was enhanced. The obtained PCE of 24.8% with a fill factor exceeding 0.83 is the highest reported among TiO2-based planar PSCs so far.
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Summary: In this study, a new nonconjugated polyelectrolyte (poly-BCP) was synthesized and introduced as a passivation layer between tin oxide and organometal halide perovskite. It effectively suppressed nonradiative recombination, resulting in improved efficiency and stability of solar cells.
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Yali Liu et al.
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Weili Fan et al.
Summary: The study demonstrates that π-conjugated oxysalt can serve as an effective interfacial binder and defect passivator for stabilizing the SnO2/perovskite interface, leading to improved efficiency and stability of perovskite solar cells.
Review
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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.
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Haibing Wang et al.
Summary: Grain boundaries in perovskite solar cells (PSCs) are vulnerable to degradation, but repairing these boundaries is challenging. A pre-annealing treatment can reconstruct the crystallites and grain boundaries, resulting in robust boundaries and improved efficiency and light stability in PSCs.
Article
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Haoyan Wang et al.
Summary: In this study, researchers strengthened the structure of perovskite solar cells (PSCs) using a compound called BDP and improved their stability. By modifying the crystallization process, passivating defects, forming a moisture-resistant layer, and inhibiting ion migration, BDP significantly enhanced the power conversion efficiency (PCE) of MAPbI3 solar cells and maintained relative stability under harsh environmental conditions.
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ENERGY & ENVIRONMENTAL SCIENCE
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Zetong SunLi et al.
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Cesur Altinkaya et al.
Summary: Tin oxide (SnO2) has emerged as a promising alternative to electron-selective layers (ESLs) in perovskite solar cells (PSCs), offering advantages such as high optical transmission, high carrier mobility, and low-temperature processability. It has the potential to play a key role in large-scale deployment and manufacturing.
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Yuquan Ai et al.
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Han Guo et al.
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Pengyang Wang et al.
Summary: By introducing cobalt chloride hexahydrate (CoCl2 center dot 6H(2)O) into SnO2 film, favorable energy level alignment and better charge extraction were achieved, leading to an enhanced V-OC and efficiency. This doping method provides an effective strategy for reducing energy loss and enhancing the efficiency of perovskite solar cells.
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Jian Xiong et al.
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