DataVXChemistry of MaterialsPaper
journal article·2010-07-13Open access

An Epitaxial Transparent Conducting Perovskite Oxide: Double-Doped SrTiO3

Jayakanth Ravichandran, Wolter Siemons, Herman Heijmerikx, Mark Huijben, Arun Majumdar, Ramamoorthy Ramesh

Chemistry of Materials· Volume 22· Issue 13
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Abstract

Epitaxial thin films of strontium titanate doped with different concentrations of lanthanum and oxygen vacancies were grown on LSAT substrates by pulsed laser deposition technique. Films grown with 5−15% La doping and a critical growth pressure of 1−10 mTorr showed high transparency (>70−95%) in the UV−visible range with a sheet resistance of 300−1000 Ω/◻. With the aid of UV−visible spectroscopy and photoluminescence, we establish the presence of oxygen vacancies and the possible band structure, which is crucial for the transparent conducting nature of these films. This demonstration will enable development of various epitaxial oxide heterostructures for both realizing opto-electronic devices and understanding their intrinsic optical properties.
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Research context

Electronic materialsMaterials processing

OpenAlex topics: Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials · Ferroelectric and Piezoelectric Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Applied Science and Technology Graduate Group, University of California, Berkeley California 94720, Department of Physics, University of California, Berkeley California 94720, Faculty of Science and Technology, University of Twente, P. O Box 217, 7500 AE, Enschede (The Netherlands), Advanced Research Projects Agency − Energy, U.S. Department of Energy, Washington, DC 20585, and Department of Materials Science and Engineering, University of California, Berkeley California 94720

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