Results 111 to 120 of about 2,344 (252)

Flexible white thermally activated delayed fluorescence polymer with alkyl spacer and side‐chain encapsulation for efficient solution‐processed white organic light‐emitting diodes

open access: yesFlexMat, EarlyView.
A “gemstone‐necklace” FASCE strategy synthesizes single‐component white polymers (PTF‐Qx) by alternating rigid TADF units with flexible alkyl chains. The non‐doped rigid device achieves a high EQE of 15.66% with stable white emission (CIE: 0.36, 0.46).
Wenhao Zhang   +7 more
wiley   +1 more source

Reverse evolution of fluorine and side chains in bisisoindigo‐based copolymers enabling electron mobility exceeding 7 cm2·V−1·s−1

open access: yesFlexMat, EarlyView.
Abstract We report the design and synthesis of a series of bisisoindigo‐based donor–acceptor (D–A) copolymers, P4F18, P4F10, P2F18, and P2F10. By reverse evolution of fluorine substitution and side‐chain structure, we effectively tuned the frontier molecular orbital energy levels, intermolecular interactions, molecular self‐assembly, and thus charge ...
Keli Shi   +11 more
wiley   +1 more source

Chiral perovskites for next‐generation chiral optoelectronics and spintronics

open access: yesFlexMat, EarlyView.
Benefiting from structural inversion symmetry breaking and strong spin‐orbit coupling, chiral perovskites possess intriguing chiral optical and spin properties. We overview their advances and core applications in perovskite solar cells, circularly polarized light detectors and spin circularly polarized‐light‐emitting diodes, offering great potential ...
Mengyao Zhang   +13 more
wiley   +1 more source

The role of additives in the film formation kinetics of active layers in organic solar cells: From in situ characterization to mechanistic elucidation

open access: yesFlexMat, EarlyView.
This review highlights the critical regulatory role of liquid and solid additives in the film formation kinetics of organic solar cells (OSCs) active layer. Real‐time in situ characterization technology techniques (in situ UV‐Vis, PL, GIWAXS, and GISAXS) are utilized to monitor the dynamic solution‐to‐solid transformation, revealing how additives ...
Yuanwei Zhao   +8 more
wiley   +1 more source

Deep red to near‐infrared thermally activated delayed fluorescence conjugated polymers toward highly efficient solution‐processible deep red and near‐infrared organic light‐emitting diodes

open access: yesFlexMat, EarlyView.
A series of deep red (DR) and near‐infrared (NIR) thermally activated delayed fluorescence conjugated polymers are prepared, their solution‐processible organic light‐emitting diodes exhibit DR emission with maximum external quantum efficiency (EQEmax) of 6.4%, high luminance of 4254 cd m−2 and emission peak at 678 nm, and a NIR device with EQEmax of 2 ...
Tao Wang   +5 more
wiley   +1 more source

Regulating secondary phase of Rb‐based aggregates for efficient and stable perovskite solar cells

open access: yesFlexMat, EarlyView.
By introducing RbAc into the precursor solution, the crystallization pathway is optimized, excessive lead iodide is eliminated, grain size increases, and defects are passivated in the perovskite films. The obtained perovskite devices exhibit improved power conversion efficiency and operational stability. Abstract Passivating defects in perovskite films
Weiyuan Chen   +7 more
wiley   +1 more source

Meniscus‐guided organic semiconductor single crystals: From fluid dynamics to morphology control and multifunctional applications

open access: yesFlexMat, EarlyView.
Centered on the multiscale meniscus, this review dissects mass transport in meniscus‐guided coating into parallel and lateral components. By analyzing the balance of multiple factors during crystallization, it establishes a clear morphology‐performance relationship.
Yumeng Wang   +7 more
wiley   +1 more source

Flexible circularly polarized light detection enabled by supramolecular chiral assembly within bulk heterojunctions

open access: yesFlexMat, EarlyView.
A supramolecular chiral induction and confined capillary‐bridge assembly enables flexible CPL photodetectors with high dissymmetry (gph, max = 0.4 at 850 nm) and broadband activity (300–1100 nm). The resulting devices exhibit low dark current, high detectivity and fast response, with stable imaging even under 30% strain, offering a robust platform for ...
Wen Wang   +11 more
wiley   +1 more source

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