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Abstract
Herein we report the synthesis and characterization of spinel copper gallate (CuGa2O4) nanocrystals (NCs) with an average size of 3.7 nm via a heat-up colloidal reaction. CuGa2O4 NCs have a band gap of ~2.5 eV and a strong p-type character, in agreement with ab initio simulations. These NCs are demonstrated to be photoactive, generating a reproducible photocurrent under blue light irradiation when deposited as a thin film. The ability to adjust the Cu:Ga ratio within the NCs, and its effect on the optical and electronic properties of the NCs was also demonstrated.
Supplementary materials
Title
Supporting information
Description
Supporting information for the main article "Colloidal synthesis of photoactive p-type spinel copper gallate nanocrystals", including detailed experimental methods, and additional XRD, TEM, SEM, UV-Vis, XPS, FTIR and photoelectrochemical characterizations.
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