Results 201 to 210 of about 18,077,336 (357)

Sketch and Peel Focused Ion Beam Patterning of Black Phosphorus for Mid‐Infrared Photonics

open access: yesAdvanced Optical Materials, EarlyView.
“Sketch and peel” method nano‐fabricates black phosphorus (BP) with minimal damage. A focused‐neon ion beam “sketches” the pattern, followed by polyvinyl acetate‐based “peeling” to remove surrounding flakes. Thermal treatment preserves the mid‐infrared (MIR) emission of the isolated “Koala” structure, proving it as an enabling technology for future BP ...
Huan Liu   +11 more
wiley   +1 more source

Hyperphosphorescent OLEDs: Harnessing the Power of MR‐TADF Terminal Emitters

open access: yesAdvanced Optical Materials, EarlyView.
Hyperphosphorescent organic light‐emitting diodes (HP‐OLEDs) use phosphorescent sensitizers with multiresonant thermally activated delayed fluorescence terminal emitters. HP‐OLEDs show efficient, narrowband electroluminescence and moderate efficiency roll‐off.
Emma V. Puttock   +3 more
wiley   +1 more source

Spin‐Valley Polarization Control in WSe2 Monolayers using Photochemical Doping

open access: yesAdvanced Optical Materials, EarlyView.
A photochemical doping method is employed to modulate the spin‐valley polarization in WSe2 monolayers by tuning the carrier density from electron‐rich to hole‐rich regimes. This controlled doping enables a three‐fold variation in exciton polarization, revealing relaxation channels driven by scattering between excitons and charge carriers in two ...
Eirini Katsipoulaki   +11 more
wiley   +1 more source

Quantum Emitters in Rhombohedral Boron Nitride

open access: yesAdvanced Optical Materials, EarlyView.
Rhombohedral boron nitride (rBN) is an emerging wide‐bandgap van der Waals (vdW) material with strong second‐order nonlinear optical properties. In this work, optically‐addressable spin defects and single‐photon emitters (SPEs) are fabricated deterministically in rBN.
Angus Gale   +10 more
wiley   +1 more source

Pressure‐Induced Structural and Optoelectronic Modulations in 2D Dion‐Jacobson Hybrid Lead Iodide Perovskites With a Rigid Spacer

open access: yesAdvanced Optical Materials, EarlyView.
Compression to ≈2.0 GPa results in a non‐monotonic enhancement of the Pb‐I bond distortion, rarely observed in other 2D lead‐iodide hybrid perovskites. The octahedral distortion together with the rigidity of spacer cation are found to play a dominant role in determining the optoelectronic properties of DPDAPbI4 under high pressure.
Aditya Kutty   +9 more
wiley   +1 more source

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