首页> 外文会议>IUPAC 10th International conference on novel materials and their synthesis: Book of abstracts >SOLUTION-BASED PROCESSING FOR VANADIUM DIOXIDE THIN FILMS: IMPROVED THERMOCHROMISM AND LOW EMISSIVITY PROPERTIE
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SOLUTION-BASED PROCESSING FOR VANADIUM DIOXIDE THIN FILMS: IMPROVED THERMOCHROMISM AND LOW EMISSIVITY PROPERTIE

机译:二氧化钒薄膜的基于解决方案的处理:改进的热致变色性和低发射率特性

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Vanadium dioxide is a key material for thermochromic smart windows that can response to environmental temperatures to modulate near infrared irradiation while maintaining high visible transmittance. However, because of the insufficiency in conductivity for VO_2, the emissivities of VO_2/glass windows are usually too high, which causes energy loss accompanied by the process of thermal exchanging between the interior and the exterior of the buildings. Moreover, the issues of low visible transmittance, weak modulation efficiency in the NIR region should also be addressed, before they can be applied efficient energy saving apparatus. In this work, a modified polymer-assisted deposition (PLD) method was developed for the deposition of single-layered VO_2 and TiO_2/VO_2/FTO multi-layered thin films. The investigation indicated that the incorporation of nano/meso scale porous microstructures synchronistically improved the visible transmittance and the NIR modulation abilities for the VO_2 films. Based on optical designs, a triple-layered TiO_2/VO_2/FTO structure was proposed and experimented to boost the thermochromic properties and the low-emissivity performance. ANIR modulation efficiency of 8.8% and emissivities of 0.13 and 0.24 before and after MIPT were obatained, which demonstrate a new approach of combining both thermochromism and low-emissivity performance for applications such as VO_2-based energy-saving windows. This study was supported in part by funding from the China Postdoctoral Science Foundation (Contract No. 2012M521406), the Open Fund of Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences (Contract No. SKL201310SIC) and the Key Science and Technology Research Projects of Henan Provincial Education Department (Contract No.: 14B430023).
机译:二氧化钒是用于热致变色智能窗户的关键材料,它可以响应环境温度以调节近红外辐射,同时保持较高的可见光透射率。然而,由于VO_2的导电性不足,VO_2 /玻璃窗的发射率通常太高,这导致能量损失,伴随着建筑物的内部和外部之间的热交换过程。此外,在将其应用于高效节能设备之前,还应解决近红外透射率低,调制效率低的问题。在这项工作中,开发了一种改进的聚合物辅助沉积(PLD)方法,用于沉积单层VO_2和TiO_2 / VO_2 / FTO多层薄膜。研究表明,纳米/中尺度多孔微结构的引入同步提高了VO_2薄膜的可见光透射率和NIR调制能力。基于光学设计,提出了三层TiO_2 / VO_2 / FTO结构,并进行了实验研究,以提高其热致变色性能和低发射率性能。在MIPT之前和之后,获得了8.8%的ANIR调制效率和0.13和0.24的发射率,这证明了将热致变色和低发射率性能相结合的新方法,可用于基于VO_2的节能窗。这项研究得到了中国博士后科学基金(合同号:2012M521406),中国科学院上海陶瓷研究所无机涂层材料重点实验室开放实验室(合同号:SKL201310SIC)和重点项目的资助。河南省教育厅科技攻关项目(合同编号:14B430023)。

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