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Thermochromic Phase Transitions in VO2-based Thin Films for Energy-Saving Applications

Published

Author(s)

Sara C. Barron, Justin M. Gorham, Martin L. Green

Abstract

The thermochromic transition in vanadium dioxide has potential application as a smart energy-saving window coating, but the temperature of the transition must be depressed from 68°C to Earth ambient temperatures by the incorporation of transition metal impurities. In this paper, we describe a high throughput combinatorial experiment to characterize the V1-xMxO2 phase space, in which M is a non-V metal, for thermochromic transitions. Thin film combinatorial libraries are prepared by pulsed laser deposition on hot silicon substrates, and the M impurities are found to substitute into the VO2 crystalline lattice on the V-site. For M = Ta, Nb, and W, the thermochromic transition temperature is depressed with increasing M concentration. Co-doping with multiple M atoms is also easily accomplished by combinatorial synthesis and can have unexpected effects on the thermochromic transition.
Proceedings Title
ECS Transactions
Volume
61
Issue
2
Conference Dates
May 11-15, 2014
Conference Location
Orlando, FL
Conference Title
Electrochemical Society Meeting

Keywords

thermochromics, metal-insulator transition, infrared reflectivity, thin film, combinatorial materials science

Citation

Barron, S. , Gorham, J. and Green, M. (2014), Thermochromic Phase Transitions in VO2-based Thin Films for Energy-Saving Applications, ECS Transactions , Orlando, FL, [online], https://doi.org/10.1149/06102.0387ecst (Accessed April 20, 2024)
Created May 14, 2014, Updated November 10, 2018