Arc-melting to narrow the bandgap of oxide semiconductors.

Ou, Gang; Li, Dongke; Pan, Wei; Zhang, Qinghua; Xu, Ben; Gu, Lin; Nan, Cewen; Wu, Hui · Adv Mater · 2015

basic_science · Level V

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Abstract

The bandgap of a series of oxide semiconductors is narrowed by a quick and facile arc-melting method. A defective structure is formed in the fast melting and cooling process without changing its phase structure. Enhanced optical and electrical properties are found in the arc-melted oxide, such as enhanced photocatalytic properties of the arc-melted ZnO under visible light.