Effect of lanthanum doping on modulating the thermochromic properties of VO2 thin films. Issue 54 (17th May 2016)

• Record Type: Journal Article
• Authors: Wang, Ning; Chew Shun, Nigel Tan; Duchamp, Martial; Dunin-Borkowski, Rafal E.; Li, Zhong; Long, Yi
• Is Part Of: RSC advances. Volume 6:Issue 54(2016)
• Page Start: 48455
• Page End: 48461
• Publication Date: 2016-05-17
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra09514c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : La doping is found to be effective for enhancing the luminous transmission and solar modulating abilities simultaneously for VO2 thin films, and they exhibit a low τ c reducing rate of −1.1 °C per at%. Abstract : Lanthanum (La) doped vanadium dioxide (VO2 ) thin films were fabricated through a facile sol–gel technique. The La doping was found to be effective for reducing the phase transition temperature ( τ c ) of VO2 below the 4 at% doping level, with a reducing rate of −1.1 °C per at%. In addition, below the 3 at% La doping level, the band gap ( E g ) decreased steadily with the increasing addition of La dopants. 5 at% La doping can enhance both the integrated visible transmission ( T lum ) and the solar modulating ability (Δ T sol ) simultaneously. The combination of T lum = 50.1% and Δ T sol = 10.3% represents the best values for VO2 continuous thin films.