Results 191 to 200 of about 22,589,022 (359)

TADF Host Engineering for Improved Pure Blue Matrix‐Free Hyperfluorescent OLEDs with Ultranarrow Emission

open access: yesAdvanced Optical Materials, EarlyView.
This work presents the development of efficient blue thermally activated delayed fluorescent (TADF) materials that perform well without doping, enabling simplified, matrix‐free hyperfluorescence (MFHF) OLEDs. When combined with encapsulated narrow‐band emitters, the TADF materials serve as effective hosts resulting in pure blue, ultranarrow emission ...
Hwan‐Hee Cho   +5 more
wiley   +1 more source

Breaking Crystallinity for Optimal Dark Current: Nonfullerene Acceptor Dilution as a Strategy for High‐Performance Organic Photodetectors

open access: yesAdvanced Optical Materials, Volume 13, Issue 19, July 4, 2025.
Organic photodetectors (OPDs) based on polymer donor:non‐fullerene‐acceptor (NFA) bulk heterojunction blends offer strong light‐sensing potential, but require methods for optimization. This work demonstrates NFA dilution as an effective strategy to suppress dark current and enable state‐of‐the‐art performance by disrupting NFA crystallinity.
Chiara Labanti   +11 more
wiley   +1 more source

The Impact of Donor‐Orientation on the Emission Properties of Chlorinated Trityl Radicals

open access: yesAdvanced Optical Materials, Volume 13, Issue 19, July 4, 2025.
Chlorinated trityl radicals with electron‐donating groups enable efficient red emission for optoelectronics. Donor orientation and steric constraints regulate vibronic coupling, influencing luminescence. A novel trityl derivative with restricted donor alignment minimizes non‐radiative decay, enhancing quantum yield.
Mona E. Arnold   +9 more
wiley   +1 more source

Revealing the True Nature of Double‐Peak Emission in 2D Perovskite Single Crystals Using Polariton Waveguides

open access: yesAdvanced Optical Materials, EarlyView.
Engineering structural distortion in Dion–Jacobson perovskites allows control over optical properties and electronic band structure, unveiling new structure‐property insights. Crystal microwires act as waveguides with strong light‐matter coupling, explaining the double peak emission.
Annalisa Coriolano   +14 more
wiley   +1 more source

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