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Cao X, Wang N, Law JY, et al. Nanoporous thermochromic VO₂ (M) thin films: controlled porosity, largely enhanced luminous transmittance and solar modulating ability. Langmuir. 2014;30(6):1710-5doi: 10.1021/la404666n.
Cao, X., Wang, N., Law, J. Y., Loo, S. C., Magdassi, S., & Long, Y. (2014). Nanoporous thermochromic VO₂ (M) thin films: controlled porosity, largely enhanced luminous transmittance and solar modulating ability. Langmuir : the ACS journal of surfaces and colloids, 30(6), 1710-5. https://doi.org/10.1021/la404666n
Cao, Xun, et al. "Nanoporous thermochromic VO₂ (M) thin films: controlled porosity, largely enhanced luminous transmittance and solar modulating ability." Langmuir : the ACS journal of surfaces and colloids vol. 30,6 (2014): 1710-5. doi: https://doi.org/10.1021/la404666n
Cao X, Wang N, Law JY, Loo SC, Magdassi S, Long Y. Nanoporous thermochromic VO₂ (M) thin films: controlled porosity, largely enhanced luminous transmittance and solar modulating ability. Langmuir. 2014 Feb 18;30(6):1710-5. doi: 10.1021/la404666n. Epub 2014 Feb 04. PMID: 24495102.
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Langmuir. 2014 Feb 18;30(6):1710-5. doi: 10.1021/la404666n. Epub 2014 Feb 04.

Nanoporous thermochromic VO₂ (M) thin films: controlled porosity, largely enhanced luminous transmittance and solar modulating ability.

Langmuir : the ACS journal of surfaces and colloids

Xun Cao, Ning Wang, Jia Yan Law, Say Chye Joachim Loo, Shlomo Magdassi, Yi Long

Affiliations

  1. School of Materials Science and Engineering and ‡Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.

PMID: 24495102 DOI: 10.1021/la404666n

Abstract

Vanadium dioxide is the most widely researched thermochromic material with a phase transition temperature (τ(c)) of around 68 °C, and its thermochromic performance can be enhanced by adding nanoporosity. Freeze-drying has been employed to fabricate nanostructures with different porosities from 16 to 45% by varying the prefreezing temperature and precursor concentration. The luminous transmittance (Tlum) and solar modulating ability (ΔTsol) are greatly enhanced as a result of increasing pore size and pore density. The freeze-dried sample with 7.5 mL of H2O2 precursor dip-coated at 300 mm/min gives the best combination of thermochromic properties (Tlum ≈ 50%, ΔTsol = 14.7%), which surpasses the best combined thermochromic performance reported to date that we are aware of (Tlum ≈ 41%, ΔTsol = 14.1%).

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