期刊
APPLIED PHYSICS LETTERS
卷 109, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4968810
关键词
-
资金
- Open Partnership Joint Project of JSPS-NSFC Bilateral Joint Research [61511140098]
- [15H03568]
- [26790051]
The enhancement in electrical conductivity and optical transparency induced by a phase transition from amorphous to polycrystalline in lightly silicon-doped indium oxide (InSiO) thin films is studied. The phase transition caused by simple thermal annealing transforms the InSiO thin films from semiconductors to conductors. Silicon atoms form SiO4 tetrahedra in InSiO, which enhances the overlap of In 5s orbitals as a result of the distortion of InO6 octahedral networks. Desorption of weakly bonded oxygen releases electrons from deep subgap states and enhances the electrical conductivity and optical transparency of the films. Optical absorption and X-ray photoelectron spectroscopy measurements reveal that the phase transition causes a Fermi energy shift of similar to 0.2 eV. Published by AIP Publishing.
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