Yutaka Majima

Narrow-Line-Width Electroluminescence in Monolayer WSe2 Enabled by a Sub-5 nm Au/Pt Nanogap

Abstract Spectrally isolated, electrically driven emission from localized states in two-dimensional semiconductors remains challenging in scalable planar devices. Here, we report narrow-line-width alternating-current electroluminescence (ACEL) from localized states in monolayer W...

Blue Upconversion Organic Light‐Emitting Diodes Achieving 1000 cd m −2 With an Operating Voltage of 2.7 V by Suppressing Interfacial Exciton Quenching

ABSTRACT Triplet–triplet annihilation upconversion (TTA‐UC) provides an effective route for generating high‐energy excitons from low‐energy states, but its efficiency is intrinsically limited at low triplet density because first‐order decay pathways dominate over the bimolecular...