Results 151 to 160 of about 40,284 (328)

Recent Advances on Self‐Powered Metal Halide Perovskite Photodetectors

open access: yesEcoEnergy, EarlyView.
This review outlines that metal halide perovskites, with high absorption coefficient and carrier mobility, enable self‐powered photodetectors. These devices operate without external power, with improvements via structural optimization, film engineering, and defect passivation, showing promise in smart sensors and Internet of Things applications ...
Guoqing Xiong   +5 more
wiley   +1 more source

Low‐Coordination Solvation Engineering Enables Efficient and Stable Perovskite Solar Cells

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work introduces a kind of low‐coordination solvent, dimethyl carbonate (DMC), to replace a part of DMSO and DMF. DMC substitutes a part of DMSO to coordinate with PbI2 to change the chemical environment of PbI2. What is more, DMC promotes the formation of the nucleation of α‐FAPbI3 crystals.
Haokun Jiang   +4 more
wiley   +1 more source

Synthesis of Unsymmetric Bis(heteroaryl) Selenides by Rhodium‐Catalyzed Exchange Reaction of Heteroaryl Fluorides and Ethers Using Se‐Heteroaryl Carboselenoates

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Various unsymmetric bis(heteroaryl) selenides are synthesized by the rhodium‐catalyzed exchange reaction of heteroaryl fluorides and ethers with Se‐heteroaryl 1‐adamatanecarboselenoates. The synthetic method is applicable to a broad range of five‐ and six‐membered heteroaryl derivatives and provides compounds containing multiple heteroatoms.
Masana Yazaki   +3 more
wiley   +1 more source

Multifunctional ionic liquid boosts the efficiency of hole transport layer‐free carbon‐based perovskite solar cells beyond 20%

open access: yesFlexMat, EarlyView.
HTL‐free carbon‐based PSCs are promising in stability but limited by efficiency. Systematic screening identifies DMAFo as an optimized ionic‐liquid additive: the DMA+ regulates lattice distortion and relieves residual stress, while Fo‒ passivates halide vacancies, and ameliorates band‐alignment.
Zhiyang Ju   +10 more
wiley   +1 more source

Elucidating the origin of open‐circuit voltage in ternary organic solar cells with a nonfullerene and a fullerene acceptor

open access: yesInfoMat, EarlyView.
Fullerenes tend to alloy with polymer:nonfullerene acceptor hosts, yielding composition‐dependent increases in open‐circuit voltage while recombination remains governed by the charge‐transfer state energy and is independent of the nature of the third component.
Dominic Blätte   +14 more
wiley   +1 more source

Investigation of the Dielectric and Electrical Properties of Poly(chloro‐p‐xylylene) (Parylene‐C) Layers for Controlling Charge Transport in Organic Field‐Effect Transistors

open access: yesMacromolecular Materials and Engineering, EarlyView.
This study examines the π–π stacking behavior of organic semiconductors on poly(chloro‐p‐xylylene) dielectric layers and elucidates its influence on molecular ordering and charge transport properties. Based on these observations, organic transistors with optimized electrical performance are fabricated, offering valuable insights for the development of ...
Taeyun Shim   +7 more
wiley   +1 more source

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