Issue 11, 2023

Facet-dependent optical and electrical properties of SrTiO3 wafers

Abstract

Transparent {100} and {111} SrTiO3 wafers display a visually detectable color difference. They give considerably different absorption spectra, and have band gaps of 3.04 and 3.06 eV for the {100} and {111} wafers, respectively. Hence, wafer-scale crystals also possess facet-related optical behavior. Cuts over these wafers expose the {110} side faces for electrical conductivity measurements. The {111} face is much more conductive than the {110} face, while the {100} face has the lowest conductivity. Electrical connection for the {110}/{100} and {111}/{110} face combinations gives current-rectifying Iā€“V curves, so potentially the wafers can be used to fabricate transistors utilizing the electrical facet effect.

Graphical abstract: Facet-dependent optical and electrical properties of SrTiO3 wafers

Supplementary files

Article information

Article type
Paper
Submitted
10 Feb 2023
Accepted
01 Mar 2023
First published
02 Mar 2023

J. Mater. Chem. C, 2023,11, 3885-3888

Facet-dependent optical and electrical properties of SrTiO3 wafers

G. Kumar, Z. Chen, S. Jena and M. H. Huang, J. Mater. Chem. C, 2023, 11, 3885 DOI: 10.1039/D3TC00483J

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