Zhang Jiasong, Li Jingbo, Chen Pengwan, Rehman Fida, Jiang Yijie, Cao Maosheng, Zhao Yongjie, Jin Haibo
Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Sci Rep. 2016 Jun 14;6:27898. doi: 10.1038/srep27898.
The preparation of thermochromic vanadium dioxide (VO2) films in an economical way is of interest to realizing the application of smart windows. Here, we reported a successful preparation of self-assembly VO2 nanoplate films on TiO2-buffered glass by a facile hydrothermal process. The VO2 films composed of triangle-shaped plates standing on substrates exhibit a self-generated porous structure, which favors the transmission of solar light. The porosity of films is easily controlled by changing the concentration of precursor solutions. Excellent thermochromic properties are observed with visible light transmittance as high as 70.3% and solar modulating efficiency up to 9.3% in a VO2 film with porosity of ~35.9%. This work demonstrates a promising technique to promote the commercial utilization of VO2 in smart windows.
以经济的方式制备热致变色二氧化钒（VO₂）薄膜对于实现智能窗的应用具有重要意义。在此，我们报道了通过简便的水热法在TiO₂缓冲玻璃上成功制备自组装VO₂纳米板薄膜。由立在基底上的三角形板组成的VO₂薄膜呈现出自生的多孔结构，这有利于太阳光的透射。通过改变前驱体溶液的浓度可以轻松控制薄膜的孔隙率。在孔隙率约为35.9%的VO₂薄膜中观察到了优异的热致变色性能，其可见光透过率高达70.3%，太阳调制效率高达9.3%。这项工作展示了一种有前景的技术，可促进VO₂在智能窗中的商业应用。
