Vanadium dioxide nanogrid films for high transparency smart architectural window applications

Chang Liu; Igal Balin; Shlomo Magdassi; Ibrahim Abdulhalim; Yi Long

doi:10.1364/OE.23.00A124

Vanadium dioxide nanogrid films for high transparency smart architectural window applications

Chang Liu, Igal Balin, Shlomo Magdassi, Ibrahim Abdulhalim, Yi Long

Research output: Contribution to journal › Article › peer-review

86 Scopus citations

Abstract

This study presents a novel approach towards achieving high luminous transmittance (T_lum) for vanadium dioxide (VO₂) thermochromic nanogrid films whilst maintaining the solar modulation ability (ΔT_sol). The perforated VO₂-based films employ orderly-patterned nano-holes, which are able to favorably transmit visible light dramatically but retain large near-infrared modulation, thereby enhancing ΔT_sol. Numerical optimizations using parameter search algorithms have implemented through a series of Finite Difference Time Domain (FDTD) simulations by varying film thickness, cell periodicity, grid dimensions and variations of grid arrangement. The best performing results of T_lum (76.5%) and ΔT_sol (14.0%) are comparable, if not superior, to the results calculated from nanothermochromism, nanoporosity and biomimic nanostructuring. It opens up a new approach for thermochromic smart window applications.

Original language	English
Pages (from-to)	A124-A132
Journal	Optics Express
Volume	23
Issue number	3
DOIs	https://doi.org/10.1364/OE.23.00A124
State	Published - 9 Feb 2015

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.23.00A124

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title = "Vanadium dioxide nanogrid films for high transparency smart architectural window applications",

abstract = "This study presents a novel approach towards achieving high luminous transmittance (Tlum) for vanadium dioxide (VO2) thermochromic nanogrid films whilst maintaining the solar modulation ability (ΔTsol). The perforated VO2-based films employ orderly-patterned nano-holes, which are able to favorably transmit visible light dramatically but retain large near-infrared modulation, thereby enhancing ΔTsol. Numerical optimizations using parameter search algorithms have implemented through a series of Finite Difference Time Domain (FDTD) simulations by varying film thickness, cell periodicity, grid dimensions and variations of grid arrangement. The best performing results of Tlum (76.5%) and ΔTsol (14.0%) are comparable, if not superior, to the results calculated from nanothermochromism, nanoporosity and biomimic nanostructuring. It opens up a new approach for thermochromic smart window applications.",

author = "Chang Liu and Igal Balin and Shlomo Magdassi and Ibrahim Abdulhalim and Yi Long",

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AU - Liu, Chang

AU - Balin, Igal

AU - Magdassi, Shlomo

AU - Abdulhalim, Ibrahim

AU - Long, Yi

PY - 2015/2/9

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AB - This study presents a novel approach towards achieving high luminous transmittance (Tlum) for vanadium dioxide (VO2) thermochromic nanogrid films whilst maintaining the solar modulation ability (ΔTsol). The perforated VO2-based films employ orderly-patterned nano-holes, which are able to favorably transmit visible light dramatically but retain large near-infrared modulation, thereby enhancing ΔTsol. Numerical optimizations using parameter search algorithms have implemented through a series of Finite Difference Time Domain (FDTD) simulations by varying film thickness, cell periodicity, grid dimensions and variations of grid arrangement. The best performing results of Tlum (76.5%) and ΔTsol (14.0%) are comparable, if not superior, to the results calculated from nanothermochromism, nanoporosity and biomimic nanostructuring. It opens up a new approach for thermochromic smart window applications.

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Vanadium dioxide nanogrid films for high transparency smart architectural window applications

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