Results 111 to 120 of about 44,300 (311)

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

Photovoltaics of low-bandgap inorganic perovskites

Green Carbon
Low-bandgap inorganic perovskites are a group of materials that can simultaneously harness the stability merit of an all-inorganic composition and high photovoltaic efficiency potential of low-bandgap light absorbers as compared with other perovskite ...
Mingyu Hu, Changyu Yang, Yalan Zhang, Shihe Yang, Yuanyuan Zhou   +4 more
doaj   +1 more source

Synthesis, characterization and physical properties of the skutterudites YbxFe2Ni2Sb12 (0<=x<=0.4) [PDF]

, 2012
The skutterudites YbxFe2Ni2Sb12 (0 <= x <= 0.4) have been prepared by solid-state reaction and characterised by powder X-ray diffraction. The compounds crystallise in the cubic space group Im (3) over bar (a approximate to 9.1 angstrom) with Yb ...
Powell, Anthony V., Kaltzoglou, Andreas, Kaltzoglou A, Knight, Kevin S., Knight KS, Vaqueiro, Paz, Knight, K. S., Vaqueiro P, Powell AV   +8 more
core   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

Advanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain, Xian'e Li, Mats Fahlman, Olle Inganäs, Koen Vandewal, Feng Gao   +5 more
wiley   +1 more source

Interfacing 2D Perovskite Featuring Face‐Sharing Octahedra with 3D Perovskite for Stable Photovoltaics

Small Structures
Combining 2D and 3D perovskites has become a common strategy, and a range of methods for fabricating 2D/3D heterointerfaces jointly improve device performance and stability by grain boundary defect passivation and protective capping layer formation ...
Wei Fan, Shaochen Zhang, Qingqing Liu, Jiahui Shen, Borui Lei, Xiaohe Miao, Qingyun Xiao, Donger Jin, Suirong Xie, Jiazhe Xu, Xirui Liu, Chuanxiao Xiao, Jingjing Xue, Rui Wang   +13 more
doaj   +1 more source

Lattice‐Matched 2D Template Enables Efficient Cesium Tin Halide Perovskite Solar Cells

Advanced Materials, EarlyView.
Lattice‐matched 2D perovskite PEA2CsSn2I7 templates the out‐of‐plane growth of inorganic 3D γ‐CsSnI3 along the (110) plane, forming highly oriented 2D/3D tin halide perovskite heterostructures. With reduced trap states and mitigated δ‐phase impurities, the CsSnI3‐based solar cells achieve a power conversion efficiency of 15.27% and maintain stable ...
Hongzhe Anna Xu, Dongxu He, Wencai Zhou, Julian A. Steele, Zhiliang Wang, Zitong Wang, Chengxi Zhang, Shanshan Ding, Bowei Zhang, Huiyuan Cheng, Mengmeng Hao, Jiangyu Hang, Can Zheng, Zilong Zheng, Peng Chen, Lianzhou Wang   +15 more
wiley   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Excitonic states and structural stability in two-dimensional hybrid organic-inorganic perovskites

Journal of Science: Advanced Materials and Devices, 2019
Two-dimensional (2D) perovskites are a new class of functional materials that may find applications in various technologically important areas. Due to the better moisture and illumination stability, layered perovskites can be the next generation of ...
Yulia Lekina, Ze Xiang Shen
doaj   +1 more source

Strategies for Improving the Stability of Tin‐Based Perovskite (ASnX3) Solar Cells

Advanced Science, 2020
Although lead‐based perovskite solar cells (PSCs) are highly efficient, the toxicity of lead (Pb) limits its large‐scale commercialization. As such, there is an urgent need to find alternatives. Many studies have examined tin‐based PSCs.
Huanhuan Yao, Faguang Zhou, Zhizai Li, Zhipeng Ci, Liming Ding, Zhiwen Jin   +5 more
doaj   +1 more source