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Title: Perovskite Sr-doped LaCrO3 as a new p-type transparent conducting oxide

Transparent conducting oxides (TCOs) constitute a unique class of materials which combine the seemingly mutually exclusive properties of electrical conductivity and optical transparency in a single material. TCOs are useful for a wide range of applications including solar cells, displays, light emitting diodes and transparent electronics. Simple post-transition metal oxides such as ZnO, In2O3 and SnO2 are wide gap insulators in which the ionic character generates an oxygen 2p-derived valence band (VB) and a metal s-derived conduction band (CB), resulting in large optical band gaps (>3.0 eV) and excellent n-type conductivity when donor doped. In contrast, the development of efficient p-type TCOs remains a global materials challenge. Converting n-type oxides to p-type analogs by acceptor doping is extremely difficult and these materials display poor conductivity.
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Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 1521-4095; 48341; KC0203020
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Advanced Materials (Online); Journal Volume: 27; Journal Issue: 35
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
Country of Publication:
United States
complex oxide; p-type semiconductor; transparent conducting oxide; Environmental Molecular Sciences Laboratory