Defect-Resistant Radiative Performance of m-Plane Immiscible Al<sub>1-</sub><sub>x</sub> In<sub>x</sub> N Epitaxial Nanostructures for Deep-Ultraviolet and Visible Polarized Light Emitters.

Chichibu, Shigefusa F; Kojima, Kazunobu; Uedono, Akira; Sato, Yoshitaka · Adv Mater · 2017

basic_science · Level V

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Abstract

Planar vacuum-fluorescent-display devices emitting polarized UV-C, blue, and green light are demonstrated using immiscible Al<sub>1-</sub><sub>x</sub> In<sub>x</sub> N nanostructures grown in nonpolar m-directions. Despite the presence of high concentration of nonradiative recombination centers, the Al<sub>1-</sub><sub>x</sub> In<sub>x</sub> N nanostructures emit polarized light with the luminescence lifetimes of 22-32 ps at 300 K. This defect-resistant radiative performance suggests supernormal localized characteristics of electron-hole pairs.