Vanadium oxide (VO₂) as a phase changing material possesses abrupt infrared (IR) transmission and thermal emissivity changing during the metal–insulator transition across transition temperature (τ_c) of 68 °C. However, the high τ_c, moderate IR transmission and emissivity regulating ability limits its applications in various fields. A VO₂/carbon hybrid phase change material fabricated via homemade plasma enhanced chemical vapor deposition is reported. The material shows a best reported thermal emissivity contrast (0.44) among the experimental values, a largely lowered τ_c (45 °C), promising a near IR‐regulation ability with enhanced photothermal effect in smart windows applications. The theoretical calculation results proved that the improvement of emissivity contrast is due to the hybridization of carbon. This work provides a new approach to synthesize VO₂ hybrid materials, which have wide applications in camouflage, sensing, and smart windows.

中文翻译：

---

具有高热发射率转换能力和近红外调节性能的VO2 /碳杂化相变材料的转变温度大大降低

氧化钒（VO ₂）的相变材料具有突然红外（IR）发射和热发射率跨越转变温度的金属-绝缘体转变期间改变（τ _{C ^}）为68℃。然而，高τ _Ç，中度IR透射和发射率调节能力限制了在各个领域及其应用。据报道，通过自制的等离子增强化学气相沉积法制备的VO ₂ /碳杂化相变材料。该材料显示了实验值中的最佳报告的热发射率对比度（0.44），一个大大降低τ _Ç（45°C），有望在智能窗户应用中具有近红外调节能力，并具有增强的光热效应。理论计算结果证明，发射率对比度的提高归因于碳的杂化。这项工作为合成VO ₂混合材料提供了一种新方法，该材料在伪装，传感和智能窗户中具有广泛的应用。