Effect of Lanthanum Doping on Modulating Thermochromic Properties of VO2 Thin Films
Lanthanum (La) doped vanadium dioxide (VO2) thin films were fabricated through a facile sol-gel technique. The La doping was found to be effective in reducing the phase transition temperature (τc) of VO2 below the 4 at.% doping level, with a reducing rate of -1.1 °C/at.%. In addition, below the 3 at...
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| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/80525 http://hdl.handle.net/10220/40611 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Lanthanum (La) doped vanadium dioxide (VO2) thin films were fabricated through a facile sol-gel technique. The La doping was found to be effective in reducing the phase transition temperature (τc) of VO2 below the 4 at.% doping level, with a reducing rate of -1.1 °C/at.%. In addition, below the 3 at.% La doping level, the band gap (Eg) decreased steadily with the increasing addition of La dopants. The 5 at.% La doping can enhance both integrated visible transmission (Tlum) and solar modulating ability (ΔTsol) simultaneously. The combination of Tlum=50.1% and ΔTsol=10.3% represents the best value for VO2 continuous thin films. |
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