DOPANT-FREE ALGAN-BASED ULTRAVIOLET LIGHT EMITTING DIODE AND PREPARATION METHOD THEREOF

摘要

The present invention provides a dopant-free AlGaN-based ultraviolet (UV) light emitting diode (LED) and preparation method thereof. The dopant-free AlGaN-based UV LED comprises: a substrate (1); a dopant-free n-type layer (2) deposited on the substrate (1); an active area (3) deposited on the dopant-free n-type layer (2); and a dopant-free p-type layer (4) deposited on the active area (3). The dopant-free AlGaN-based UV LED does not adopt any dopant, increasing material quality of transistor and simplifying steps of growing layers to form the material.