Wavelength-selective dual p- and n-type carrier transport of an organic/graphene/inorganic heterostructure.

Ho, Po-Hsun; Li, Shao-Sian; Liou, Yi-Ting; Wen, Cheng-Yen; Chung, Yi-Hsuan; Chen, Chun-Wei · Adv Mater · 2015

basic_science · Level V

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Abstract

A novel organic/graphene/inorganic -heterostructure, consisting of a graphene layer encapsulated by n- and p-type photoactive materials with complementary absorptions, enables the control of dual n- and p-typed transport behaviors of a graphene transistor under selective UV or visible light illumination. A graphene-based p-n junction created by spatially patterned wavelength-selective illumination using the organic/graphene/inorganic heterostructure is also demonstrated.