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

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...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 30(2014), 6 vom: 18. Feb., Seite 1710-5
1. Verfasser: Cao, Xun (VerfasserIn)
Weitere Verfasser: Wang, Ning, Law, Jia Yan, Loo, Say Chye Joachim, Magdassi, Shlomo, Long, Yi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a 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%) 
650 4 |a Journal Article 
700 1 |a Wang, Ning  |e verfasserin  |4 aut 
700 1 |a Law, Jia Yan  |e verfasserin  |4 aut 
700 1 |a Loo, Say Chye Joachim  |e verfasserin  |4 aut 
700 1 |a Magdassi, Shlomo  |e verfasserin  |4 aut 
700 1 |a Long, Yi  |e verfasserin  |4 aut 
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