Unveiling the key factor affecting the illumination deterioration and response measures for lead halide perovskite solar cells

Article Multidisciplinary Sciences

Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells

Xiaodong Li et al.

Summary: A stable perovskite heterojunction was achieved in inverted solar cells by sulfidating the surface of lead-rich perovskite films, resulting in improved power conversion efficiency and open-circuit voltage.

SCIENCE (2022)

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Article Chemistry, Applied

Tartaric acid additive to enhance perovskite multiple preferential orientations for high-performance solar cells

Zhen Wang et al.

Summary: This study demonstrates a facile and versatile approach to fabricate high-quality perovskite films for high-efficiency stable perovskite solar cells by using tartaric acid (TA) as an additive in the perovskite precursor.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Chemistry, Applied

Passivating buried interface with multifunctional novel ionic liquid containing simultaneously fluorinated anion and cation yielding stable perovskite solar cells over 23% efficiency

Deyu Gao et al.

Summary: Interfacial defects and energy barrier contribute to interfacial non-radiative recombination losses. A multifunctional buried interface modulation strategy using 4-fluoro-phenylammonium tetrafluoroborate (FBABF(4)) was developed to manage the interface between the electron transport layer and the perovskite layer. The approach successfully ameliorated the interfacial contact through simultaneous fluorination of the anion and cation in the ionic liquid molecule.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Review Chemistry, Applied

Perovskite tandem solar cells with improved efficiency and stability

Zhengjie Zhu et al.

Summary: Tandem solar cells offer an attractive approach to increasing power-conversion-efficiency and achieving industry goals, by pairing wide-bandgap metal halide perovskites with complementary bandgap photovoltaic technologies. Comparative studies of 2-terminal and 4-terminal tandems, along with collective efforts to enhance performance, processing, and stability, have led to significant progress in the field. However, further research on mobile ion character and stability testing is crucial for improving perovskite tandems towards long-term outdoor operation.

JOURNAL OF ENERGY CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Roles of MACl in Sequentially Deposited Bromine-Free Perovskite Absorbers for Efficient Solar Cells

Feihong Ye et al.

Summary: This study systematically investigated the role of MACl in sequentially deposited Br-free FA-based perovskites, revealing that MACl can regulate the reaction, phase transition, and crystallization. Compared to traditional FAPbI(3), perovskites with MACl exhibit superior performance in terms of grain size, carrier lifetime, and trap density.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Dual Additive for Simultaneous Improvement of Photovoltaic Performance and Stability of Perovskite Solar Cell

In Seok Yang et al.

Summary: Additive engineering is an efficient approach for improving photovoltaic performance and phase stability of formamidinium-based perovskite, with a dual additive strategy of mixing MACl and CsCl proving successful in enhancing open-circuit voltage Voc, reducing trap density, and increasing resistance against charge recombination. The best power conversion efficiency achieved with the dual additive is 23.22%, outperforming single additive strategies using MACl or CsCl.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Multidisciplinary Sciences

Efficient perovskite solar cells via improved carrier management

Jason J. Yoo et al.

Summary: Metal halide perovskite solar cells have shown great potential to disrupt the silicon solar cell market with their improved performance, yet still face limitations in light-harvesting due to charge carrier recombination. Efforts to enhance charge carrier management offer a path to increase device performance and approach the theoretical efficiency limit of PSCs.

NATURE (2021)

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Article Multidisciplinary Sciences

Pseudo-halide anion engineering for α-FAPbI3 perovskite solar cells

Jaeki Jeong et al.

Summary: The research introduces a new concept of using formate anion to suppress defects in metal halide perovskite films and enhance film crystallinity, leading to improved efficiency and stability of solar cells.

NATURE (2021)

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Article Multidisciplinary Sciences

Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity

Wei Hui et al.

Summary: A new method for synthesizing stable black-phase formamidinium lead iodide (α-FAPbI(3)) was reported, which enables the stable synthesis of α-FAPbI(3) under high temperature and humidity conditions, and maintains high efficiency under light stress.

SCIENCE (2021)

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Article Chemistry, Physical

Investigation of Defect-Tolerant Perovskite Solar Cells with Long-Term Stability via Controlling the Self-Doping Effect

Seong Ho Cho et al.

Summary: Investigations were conducted on the photo-aging mechanism caused by intrinsic defects, excluding extrinsic degradation factors, and it was found that new defect states were formed in Pb-rich devices. The study also revealed that relatively lead-deficient thin-film solar cells exhibit improved long-term stability, emphasizing the importance of passivating Pb-I related antisite defects near the grain boundaries and interface.

ADVANCED ENERGY MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Encapsulation Strategies for Highly Stable Perovskite Solar Cells under Severe Stress Testing: Damp Heat, Freezing, and Outdoor Illumination Conditions

Mahdi Mohammadi et al.

Summary: This study investigates a solution-based, low-cost bilayer encapsulation structure of PMMA/SB for PSCs, showing promising performance in maintaining high initial power conversion efficiency under harsh conditions. The encapsulated devices exhibited good stability even under HCl immersion and low-temperature conditions.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Optics

Stable and low-photovoltage-loss perovskite solar cells by multifunctional passivation

Guang Yang et al.

Summary: An effective approach to reduce photovoltage loss in metal halide perovskite solar cells is through the passivation of internal bulk defects and dimensionally graded two-dimensional perovskite interface defects. This method resulted in significantly low photovoltage loss and improved operational stability across different bandgap systems.

NATURE PHOTONICS (2021)

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Article Multidisciplinary Sciences

Liquid medium annealing for fabricating durable perovskite solar cells with improved reproducibility

Nengxu Li et al.

Summary: The liquid medium annealing (LMA) technology shows promise in producing high-quality perovskite films and photovoltaic devices with improved crystal growth modulation and film uniformity. This method opens up an effective avenue for scalable and reproducible quality improvement in perovskite films and devices.

SCIENCE (2021)

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Article Chemistry, Physical

Thermal Management Enables More Efficient and Stable Perovskite Solar Cells

Fengtao Pei et al.

Summary: Under thermal stress, the introduction of silicon dioxide particles can enhance the long-term stability and power conversion efficiency of perovskite solar cells, especially achieving significant improvement in a thermally stable composition.

ACS ENERGY LETTERS (2021)

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Article Energy & Fuels

Defect compensation in formamidinium-caesium perovskites for highly efficient solar mini-modules with improved photostability

Yehao Deng et al.

Summary: The addition of excessive AX in formamidinium-caesium mixed-cation perovskites improves their photostability by compensating iodide vacancies and suppressing ion migration and defects generation during long-term illumination. This approach impedes the generation of hole traps and phase segregation, ultimately enhancing the stability and efficiency of the perovskite mini-modules.

NATURE ENERGY (2021)

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Article Chemistry, Physical

Efficient perovskite solar mini-modules fabricated via bar-coating using 2-methoxyethanol-based formamidinium lead tri-iodide precursor solution

Jin Wook Yoo et al.

Summary: Efficiency of >25% has been achieved in small-area perovskite solar cells, but large-area devices face challenges in achieving similar uniform coatings and defect control. By utilizing air-knife-assisted bar-coating technique, dense and uniform perovskite films were successfully deposited, with mini-modules reaching over 20% efficiency.

JOULE (2021)

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Article Chemistry, Physical

Sandwiched electrode buffer for efficient and stable perovskite solar cells with dual back surface fields

Huachao Zai et al.

Summary: The research utilized sandwiched electrode buffer technology to enhance the efficiency and stability of perovskite solar cells, leading to improved performance of PSCs in practical applications.

JOULE (2021)

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Article Chemistry, Multidisciplinary