METHOD FOR PREPARING LAYERED COBALT ARSENIDE, LAYERED COBALT ARSENIDE PREPARED THEREBY, AND COBALT ARSENIDE NANOSHEET EXFOLIATED THEREFROM

摘要

The present invention relates to: a method for preparing layered cobalt arsenide (CoAs); layered cobalt arsenide prepared thereby; a cobalt arsenide nanosheet exfoliated therefrom; and a thermoelement, an optoelectronic device and a semiconductor device which comprise the layered cobalt arsenide or the cobalt arsenide nanosheet, and, more specifically, to: a method for preparing CoAs compound having a 2D layered crystal structure, unlike known CoAs compound having a 3D crystal structure; layered CoAs prepared thereby; and a CoAs nanosheet exfoliated therefrom.