Electronic and Optical Properties of Doped Complex Oxide Epitaxial Films and Interfaces
EMSL Project ID
47425
Abstract
The effect of A-cation site and anion-site doping, as well as heteroepitaxial interface formation, on the electronic and optical properties of La-based perovskites will be investigated. Specimens prepared by molecular beam epitaxy and off-axis pulsed laser deposition will be characterized to accurately determine composition, structural parameters and interface abruptness. These materials properties will then be correlated with optical absorption, photoconductivity and electronic transport properties to gain an in-depth understanding of the cause-and-effect relationships at work.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2012-10-04
End Date
2013-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Chambers SA, M Gu, PV Sushko, H Yang, CM Wang, and ND Browning. 2013. "Ultra-low contact resistance at an epitaxial metal/oxide heterojunction through interstitial site doping." Advanced Materials 25(29):4001–4005. doi:10.1002/adma.201301030
Colby RJ, L Qiao, H Zhang, V Shutthanandan, J Ciston, BC Kabius, and SA Chambers. 2013. "Cation Intermixing And Electronic Deviations At The Insulating LaCrO3/SrTiO3(001) Interface." Physical Review. B, Condensed Matter and Materials Physics 88(15):155325-1 to 155325-9. doi:10.1103/PhysRevB.88.155325
Qiao L, HY Xiao, SM Heald, ME Bowden, T Varga, GJ Exarhos, MD Biegalski, IN Ivanov, WJ Weber, T Droubay, and SA Chambers. 2013. "The impact of crystal symmetry on the electronic structure and functional properties of complex lanthanum chromium oxides." Journal of Materials Chemistry C 1(30):4527-4535. doi:10.1039/C3TC30883A
Qiao L, H Zhang, ME Bowden, T Varga, V Shutthanandan, RJ Colby, Y Du, BC Kabius, PV Sushko, MD Biegalski, and SA Chambers. 2013. "The Impacts of Cation Stoichiometry and Substrate Surface Quality on Nucleation, Structure, Defect Formation, and Intermixing in Complex Oxide Heteroepitaxy–LaCrO 3 on SrTiO 3 (001)." Advanced Functional Materials 23(23):2953-2963. doi:10.1002/adfm.201202655
Sushko P, L Qiao, ME Bowden, T Varga, GJ Exarhos, FK Urban, III, D Barton, and SA Chambers. 2013. "Multiband Optical Absorption Controlled by Lattice Strain in Thin-Film LaCrO3." Physical Review Letters 110(7):077401. doi:10.1103/PhysRevLett.110.077401
Zhang H, P Sushko, RJ Colby, Y Du, ME Bowden, and SA Chambers. 2014. "Reversible nano-structuring of SrCrO3-? through oxidization and reduction at low temperatures." Nature Communications 5:Artcle No. 4669. doi:10.1038/ncomms5669