@article {Liu2018-oa,
	title = {Index-tunable anti-reflection coatings: Maximizing solar modulation ability for vanadium dioxide-based smart thermochromic glazing},
	journal = {Journal of Alloys and Compounds},
	volume = {731},
	year = {2018},
	pages = {1197{\textendash}1207},
	publisher = {Elsevier B.V.},
	abstract = {Vanadium dioxide (VO2) nanoparticles with reversible semiconductor-metal phase transition holds the tremendous potential as a thermochromic material for the energy-saving smart glazing. However, the trade-off between improving the luminous transmittance (Tlum) while sacrificing the solar modulation ability (ΔTsol) hampers its bench-to-market translation. Previous studies of anti-reflection coatings (ARCs) focused primarily on increasing Tlum while neglecting ΔTsol, which is a key energy-saving determinant. The intrinsically low ΔTsol (<16\%) is due to the fact that VO2 has a higher refractive index (RI) from 500 nm to 2200 nm wavelength (λ) below its critical transition temperature (τc), which causes excessive reflection at a lower temperature. This study aims to investigate ARCs with tunable RI (1.47{\textendash}1.92 at λ = 550 nm) to improve the antireflection effect at a lower temperature, thereby maximizing ΔTsol for various VO2 nanosubstrates, e.g. continuous thin films, nanocomposites, and periodic micro-patterning films. We showed that the best performing coatings could maximize ΔTsol (from 15.7\% to 18.9\%) and increase Tlum(avg) (from 39\% to 44\%) simultaneously, which surpasses the current bench-mark specifications ever reported for ARC-coated VO2 smart glazing. In addition, the cytotoxicity analyses evidence that ARCs are feasible to improve the cyto-compatibility of VO2 nanoparticles-based nanocomposites. The presented RI-tunable ARC, which circumvents the complex materials selection and optical design, not only paves the way for practical applications of VO2-based smart windows but also has extensive applications in the field of solar cells, optical lenses, smart display, etc.},
	keywords = {2018, 5.3.19, Anti-reflection, new, Optical design, refractive index, THERMOCHROMISM, Vanadium Dioxide},
	author = {Liu, Chang and Wang, Shancheng and Zhou, Yang and Yang, Haibo and Lu, Qi and Mandler, Daniel and Magdassi, Shlomo and Tay, Chor Yong and Long, Yi}
}
