Solid-state high-luminance far ultraviolet light emitting element including highly pure hexagonal boron nitride single crystal, solid-state laser, and solid-state light emitting apparatus

摘要

A solid-state far ultraviolet light emitting element is formed by a hexagonal boron nitride single crystal, excited by electron beam irradiation to emit far ultraviolet light having a maximum light emission peak in a far ultraviolet region at a wavelength of 235 nm or shorter.