Eur. Phys. J. Appl. Phys.
Volume 88, Number 3, December 2019
|Number of page(s)||4|
|Published online||03 March 2020|
Enhanced optical performance of thermochromic VO2 based on multilayer designs
School of Materials Science and Technology, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, P.R. China
2 School of Architecture and Materials Engineering, Hubei University of Education, High-tech Second Road 129, Wuhan 430205, P.R. China
* e-mail: firstname.lastname@example.org
Received in final form: 31 January 2020
Accepted: 5 February 2020
Published online: 3 March 2020
VO2 is a widely studied thermochromic material for smart windows. In this work, we comprehensively studied optical responses of VO2-based multilayer structures. It is discovered that one-layer antireflection layer is capable of effectively enhancing both luminous transmittance (Tlum) and solar transmittance (Tsol), solar spectrum modulation (ΔTsol) is however quite moderate. Employing a two-top-layer strategy further improves the optical performance of VO2, especially with an increase of ΔTsol from 0.068 to 0.082. Remarkably, combining a layer with an index of 2.2 at the VO2/glass interface continues to enhance the optical performance, leading to the highest Tlum and ΔTsol among the investigated multilayer structures. Compared to the base structure of VO2/glass, it contributes to a relative enhancement of 26.4% (from 0.435 to 0.550) for Tlum (<τc), 35.3% (from 0.362 to 0.490) for Tlum (>τc), and 71.7% (from 0.060 to 0.103) for ΔTsol.
© EDP Sciences, 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.