Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/65448
Title: Nanostructured vanadium dioxide films
Authors: Cao, Xun
Keywords: DRNTU::Engineering::Materials::Nanostructured materials
DRNTU::Engineering::Materials::Functional materials
Issue Date: 2015
Publisher: Nanyang Technological University
Source: Cao, X. (2015). Nanostructured vanadium dioxide films. Master's thesis, Nanyang Technological University, Singapore.
Abstract: Vanadium (IV) oxide (VO2) is the most widely researched thermochromic (TC) material. Owing to its fully reversible metal-insulator transition (MIT) at the critical temperature (τc) of 68 ˚C, which is the closest to the room temperature and adjustable through doping, it has the potential application as the energy-saving coating for smart windows. Recent researches revealed that introducing porosity and fabrication of nanoparticles (NPs)/matrix composite foils could produce VO2 coatings at the best TC performance. This research employs lyophilisation (freeze drying) technique to fabricate nanoporous VO2 thin films and agglomeration-free NPs. The best combination of TC properties for the former achieved Tlum ≈ 50% and ΔTsol = 14.7%, while that for the latter achieved average Tlum = 35%, ΔTsol = 6.8%, τc = 64.5 ˚C and Δτc = 4.5 ˚C, with small particle size and narrow distribution (37-53 nm) as well as high crystallinity (LC = 36.76 J/g, close to the commercial VO2 powder).
URI: http://hdl.handle.net/10356/65448
Rights: This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
Fulltext Permission: embargo_restricted_20220731
Fulltext Availability: With Fulltext
Appears in Collections:MSE Theses

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