title: Native defects determine phase-dependent photoluminescence behavior of Eu(2+) and Eu(3+) in In2O3 nanocrystals.
abstract: We demonstrate the coexistence of Eu(2+) and Eu(3+) in corundum and bixbyite-type colloidal In2O3 nanocrystals. The emission properties of dopants in both oxidation states are determined by their interaction with native defects, and are dramatically different in the two nanocrystal phases. This difference arises from the smaller nanocrystal size and higher defect density in metastable corundum-type nanocrystals.
authors.affiliation: Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada. pavler@uwaterloo.ca.
authors.forename: Vahid
authors.initials: V
authors.lastname: Ghodsi
authors.affiliation: Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada. pavler@uwaterloo.ca.
authors.forename: Arunasish
authors.initials: A
authors.lastname: Layek
authors.affiliation: Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada. pavler@uwaterloo.ca.
authors.forename: Manu
authors.initials: M
authors.lastname: Hegde
authors.affiliation: Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada. pavler@uwaterloo.ca.
authors.forename: Baran
authors.initials: B
authors.lastname: Yildirim
authors.affiliation: Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada. pavler@uwaterloo.ca.
authors.forename: Pavle V
authors.initials: PV
authors.lastname: Radovanovic
mesh_terms: D005063:Europium / Q000737:chemistry*; D007204:Indium / Q000737:chemistry*; D049449:Luminescence; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles
chemical_list: D007204:Indium; D005063:Europium; C047711:indium oxide