Electrical and optical properties of single-crystalline SnO $$_2$$ 2 nanowires: experiment and theory

Electrical and optical properties of single-crystalline SnO $$_2$$ 2 nanowires:... The single-crystalline of tin oxide (SnO $$_2$$ 2 ) nanowires (NWs) have been synthesized successfully via chemical vapour deposition and structurally characterized by using x-ray powder diffraction, transmission electron microscopy and high-resolution transmission electron microscopy. The optical absorption of the SnO $$_2$$ 2 NWs were measured by spectrophotometer. Here, we also have performed first principles calculations based on density functional theory to investigate the band structure and dielectric function of this SnO $$_2$$ 2 NWs to expose the luminescence mechanism. It is observed that the bandgap energy of the SnO $$_2$$ 2 NWs to be 3.68 eV, exhibiting a 80 meV blue shift from that of the bulk SnO $$_2$$ 2 . In a subsequent ab initio electronic structure calculation, the effects of defects (e.g., O and Sn vacancies) on the nature and origin of absorption are investigated for the single-crystalline system. Electronic structure calculations suggest electronic doping to be more effective to stabilize the absorption and the dielectric function results are consistent with the experimental phenomenon. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Electrical and optical properties of single-crystalline SnO $$_2$$ 2 nanowires: experiment and theory

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
D.O.I.
10.1007/s10854-017-7139-4
Publisher site
See Article on Publisher Site

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