학술논문
Vanadium Dioxide Nanoparticle-based Thermochromic Smart Coating: High Luminous Transmittance, Excellent Solar Regulation Efficiency, and Near Room Temperature Phase Transition
Document Type
Article
Author
Source
ACS Applied Materials & Interfaces; December 2015, Vol. 7 Issue: 50 p27796-27803, 8p
Subject
Language
ISSN
19448244
Abstract
An annealing-assisted preparation method of well-crystallized VxW1–xO2(M)@SiO2core–shell nanoparticles for VO2-based thermochromic smart coatings (VTSC) is presented. The additional annealing process reduces the defect density of the initial hydrothermally prepared VxW1–xO2(M) nanoparticles and enhances their crystallinity so that the thermochromic film based on VxW1–xO2(M)@SiO2nanoparticles can exhibit outstanding thermochromic performance with balanced solar regulation efficiency (ΔTsol) of 17.3%, luminous transmittance (Tlum) up to 52.2%, and critical phase transition temperature (Tc) around 40.4 °C, which is very promising for practical application. Furthermore, it makes great progress in reducing Tcof VTSC to near room temperature (25.2 °C) and simutaneously maintaining excellent optical properties (ΔTsol= 14.7% and Tlum= 50.6%). Such thermochromic performance is good enough to make VTSC applicable to practical architecture.