VO2-Based Infrared Radiation Regulator with Excellent Dynamic Thermal Management Performance

作者：Jinxin Gu, Hang Wei, Feifei Ren, Huan Guan, Shuhui Liang, Chenchen Geng, Long Li, Jiupeng Zhao, Shuliang Dou, Yao Li · 发表于：ACS Applied Materials & Interfaces · 年份：2022 · DOI：10.1021/acsami.1c17914 · 被引用次数：95 · 研究领域：Thermal Radiation and Cooling Technologies、Transition Metal Oxide Nanomaterials、Urban Heat Island Mitigation

Dynamic thermal management materials attract fast-increasing interest due to their adaptability to changing environments and greater energy savings as compared to static materials. However, the high transition temperature and the low emittance tunability of the vanadium dioxide (VO 2 )-based infrared radiation regulators limit their practical applications. This study addresses these issues by proposing a smart infrared radiation regulator based on a Fabry–Pérot cavity structure (VO 2 /HfO 2 /Al), which is prepared by high-power impulse magnetron sputtering (HiPIMS) and has the potential for large-scale production. Remarkably, the outstanding emittance tunability reaches 0.51, and the phase transition temperature is lowered to near a room temperature of 27.5 °C by tungsten (W) doping. In addition, a numerical thermal management power of 196.3 W/m 2 (at 8–14 μm band) can be obtained from 0 to 60 °C. As a proof-of-concept, the demonstrated capabilities of the VO 2 infrared radiation regulator show great potentials in a wide range of applications for the thermal management of buildings and vehicles.