Cerium oxide nanoparticle as interfacial modifier for efficient and UV-stable solar cells

Article Chemistry, Multidisciplinary

Homogeneously Large Polarons in Aromatic Passivators Improves Charge Transport between Perovskite Grains for >24 % Efficiency in Photovoltaics

Jia-Hui Zhao et al.

Summary: The modulation of intermolecular interaction of aromatic passivators to yield homogeneous large polarons (HLPs) is crucial for improving the performance and stability of perovskite solar cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Physical

CsI Enhanced Buried Interface for Efficient and UV-Robust Perovskite Solar Cells

Hang Xu et al.

Summary: By utilizing CsI-SnO2 complex as the buried interface for the electron transport layer, an effective strategy for enhancing the efficiency and stability of perovskite solar cells has been achieved. CsI modification facilitates perovskite film growth and defect passivation, while the gradient distribution of Cs+ contributes to suitable band alignment and enhanced resistance to UV exposure, resulting in significantly improved power conversion efficiency and UV stability for FAPbI(3)-based PSCs.

ADVANCED ENERGY MATERIALS (2022)

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Review Chemistry, Multidisciplinary

Advances in SnO2 for Efficient and Stable n-i-p Perovskite Solar Cells

So Yeon Park et al.

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.

ADVANCED MATERIALS (2022)

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Article Energy & Fuels

Modulating crystal growth of formamidinium-caesium perovskites for over 200 cm2 photovoltaic sub-modules

Tongle Bu et al.

Summary: By tailoring the composition of the precursor ink and adding additives in the co-solvent system, high-efficiency perovskite solar cells over large areas have been achieved.

NATURE ENERGY (2022)

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Article Chemistry, Physical

Rational selection of the polymeric structure for interface engineering of perovskite solar cells

Minhuan Wang et al.

Summary: This study investigates the structural effects of different polymeric modification agents on perovskite solar cells. It is found that polyvinyl acetate exhibits the strongest electron-donating ability and effectively passivates defects, leading to enhanced carrier diffusion.

JOULE (2022)

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Article Multidisciplinary Sciences

Ion-modulated radical doping of spiro-OMeTAD for more efficient and stable perovskite solar cells

Tiankai Zhang et al.

Summary: This study proposes a new doping strategy for perovskite solar cells, using stable organic radicals as dopants and ionic salts as doping modulators. The strategy improves the performance and stability of the devices and could inspire further optimization in other optoelectronic devices.

SCIENCE (2022)

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Article Multidisciplinary Sciences

Surface reaction for efficient and stable inverted perovskite solar cells

Qi Jiang et al.

Summary: In this study, a reactive surface engineering approach was used to enhance the performance of perovskite solar cells with an inverted structure. The resulting p-i-n solar cells showed a high power conversion efficiency of over 25% and remained stable after long-term operation under extreme conditions.

NATURE (2022)

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Article Chemistry, Physical

Tautomeric Passivation Strategy-Assisted Photostable Perovskite Solar Modules

Yang Wang et al.

Summary: This study proposes a molecular modification strategy to assist defect passivation, enhancing the stability of perovskite solar modules and preventing UV degradation.

ACS ENERGY LETTERS (2022)

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Article Chemistry, Multidisciplinary

Homogeneously Large Polarons in Aromatic Passivators Improves Charge Transport between Perovskite Grains for > 24% Efficiency in Photovoltaics

Jia-Hui Zhao et al.

Summary: By doping a monoamine Cu porphyrin into perovskite films, self-assembled supramolecules were successfully prepared and shown to greatly improve the stability and efficiency of perovskite solar cells (PSCs). The modulation of intermolecular interaction of aromatic passivators to yield large polarons (HLPs) is crucial for accelerating charge transport between perovskite grains.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Intramolecular Electric Field Construction in Metal Phthalocyanine as Dopant-Free Hole Transporting Material for Stable Perovskite Solar Cells with >21 % Efficiency

Zefeng Yu et al.

Summary: Ni phthalocyanine (NiPc)with methoxyethoxy units as HTMs showed improved conductivity and hole mobility in PSCs, achieving a record efficiency of 21.23%. The extracted holes in NiPc are mainly concentrated on the phthalocyanine core and transferred between molecules, demonstrating good stability in moisture, heating, and light.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Multidisciplinary Sciences

Nanoscale localized contacts for high fill factors in polymer-passivated perovskite solar cells

Jun Peng et al.

Summary: This research introduces a nanopatterned electron transport layer that overcomes the trade-off between passivation quality and series resistance in traditional polymer passivation layers. Combining the nanopatterned electron transport layer with a dopant-free hole transport layer improves the efficiency and stability of perovskite solar cells.

SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Stabilizing Fullerene for Burn-in-Free and Stable Perovskite Solar Cells under Ultraviolet Preconditioning and Light Soaking

Pengjie Hang et al.

Summary: Introducing Bphen in perovskite solar cells stabilizes the C-60-cage through formation of stable charge-transfer complexes, achieving efficient devices. The resulting devices demonstrate good stability under simulated conditions.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Tautomeric Molecule Acts as a Sunscreen for Metal Halide Perovskite Solar Cells

Yang Wang et al.

Summary: Applying a sunscreen molecule onto perovskite solar cells enhances their UV endurance and passivates defects by molecular tautomerism, significantly improving device efficiency. The sunscreen strategy enables long-term UV stability for perovskite solar cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Grain Boundary Engineering with Self-Assembled Porphyrin Supramolecules for Highly Efficient Large-Area Perovskite Photovoltaics

Zihan Fang et al.

Summary: Grain boundary management is crucial for the performance of polycrystalline perovskite solar cells, and a designed supramolecular binder can simultaneously passivate defects and promote carrier transport, leading to improved efficiency and stability. The NiP-doped PSCs achieved a certified efficiency of 22.1% and retained over 80% initial performance after continuous illumination or heating for 3000 hours at 85 degrees C.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (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 Chemistry, Multidisciplinary

Synergistic Effects of Eu-MOF on Perovskite Solar Cells with Improved Stability

Jie Dou et al.

Summary: The introduction of an ultrathin Eu-MOF layer in perovskite solar cells has been shown to enhance device stability and light utilization by reducing defect concentration, improving carrier transport, and utilizing the Forster resonance energy transfer effect. This leads to a champion power conversion efficiency of 22.16% and excellent device stability, with 96% of original PCE retained after 2000 hours under 30% relative humidity and 91% retained after 1200 hours at 85 degrees C in N-2 environment.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Lead and Iodide Fixation by Thiol Copper(II) Porphyrin for Stable and Environmental-Friendly Perovskite Solar Cells

Guo-Bin Xiao et al.

CCS Chemistry (2021)

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Article Chemistry, Multidisciplinary

Sulfonate-Assisted Surface Iodide Management for High-Performance Perovskite Solar Cells and Modules

Ruihao Chen et al.

Summary: Surface iodide management using cesium sulfonate can stabilize lead halide perovskite surfaces, reduce surface defects and nonradiative recombination, and improve the efficiency and stability of perovskite solar cells.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (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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Review Chemistry, Physical

Recent Advances of Ceria-Based Materials in the Oxidation of Carbon Monoxide

Chenxi Dong et al.

Summary: Research on low-temperature CO oxidation has shown that CeO2, widely used as a catalyst and catalyst support, plays a key role in improving the activity of cerium-based catalysts in CO oxidation. Several strategies for enhancing CeO2 activity, including metal loading and adjusting exposed facets, have been explored.

SMALL STRUCTURES (2021)

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Article Chemistry, Multidisciplinary

9.7%-efficient Sb2(S,Se)3 solar cells with a dithieno[3,2-b: 2′,3′-d]pyrrole-cored hole transporting material

Chenhui Jiang et al.

Summary: This study presents a one-step hydrothermal process using selenourea as a selenium source to prepare a single-phase and compact Sb-2(S,Se)(3) light absorber film with a desirable bandgap. When a low-cost planar small molecule (DTPThMe-ThTPA) is employed as the hole transporting material, an optimized interfacial energy level alignment is achieved, leading to a champion efficiency of 9.7% and improved stability through the chemical interaction between neighbouring thiophene and Sb atoms.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Chemistry, Multidisciplinary