Joule heating driven infrared switching in flexible VO2 nanoparticle films with reduced energy consumption for smart windows

Shen, Nan1,2; Chen, Shi1; Wang, Weijun1; Shi, Run1; Chen, Pengcheng1; Kong, Dejun1; Liang, Yuxing1; Amini, Abbas3; Wang, Jianbo2; Cheng, Chun1

2019-03-07

10.1039/c8ta11071a

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

Vanadium dioxide (VO2) is emerging as the most promising candidate for next-generation smart windows. However, the applications of VO2-based films encounter the bottleneck of its optimal thermochromic property being unable to be retained as the modulating phase transition temperature approaches the ambient temperature. Joule heating is an effective approach to maintain the infrared switching ability of pristine VO2 films, but the accompanied energy consumption and its effects on the infrared switching ability of flexible VO2 films are still unexplored. Here, we fabricated flexible VO2 nanoparticle films via a scalable blade-coating process and investigated the effects of Joule heating on the infrared switching of flexible VO2 films. Infrared switching triggered by Joule heating can be effectively managed by the input voltages with high stability and exhibited no obvious degradation even after 10000 bending cycles, suggesting excellent flexibility. Importantly, we found that maximum infrared switching ability could be sustained with a dramatically reduced power, 15% of the threshold power (224 mW cm(-2)), by utilizing the hysteresis behaviour of the as-prepared VO2 films. This study provides a practical strategy for utilizing hysteresis behaviour to maintain the optimal infrared switching ability of flexible VO2 films with low energy consumption, substantially promoting the development of flexible smart devices.

SCI ; EI

英语

第一 ; 通讯

China Postdoctoral Science Foundation[2018M642892]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000460687400022

ROYAL SOC CHEMISTRY

20191006585451

Energy utilization ; Heating ; Hysteresis ; Joule heating ; Metallic films ; Nanoparticles ; Switching ; Targeted drug delivery ; Temperature

Energy Utilization:525.3 ; Thermodynamics:641.1 ; Nanotechnology:761 ; Solid State Physics:933 ; Systems Science:961

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China
3.Western Sydney Univ, Ctr Infrastruct Engn, Kingswood, NSW 2751, Australia

Shen, Nan,Chen, Shi,Wang, Weijun,et al. Joule heating driven infrared switching in flexible VO2 nanoparticle films with reduced energy consumption for smart windows[J]. Journal of Materials Chemistry A,2019,7(9):4516-4524.

Shen, Nan.,Chen, Shi.,Wang, Weijun.,Shi, Run.,Chen, Pengcheng.,...&Cheng, Chun.(2019).Joule heating driven infrared switching in flexible VO2 nanoparticle films with reduced energy consumption for smart windows.Journal of Materials Chemistry A,7(9),4516-4524.

Shen, Nan,et al."Joule heating driven infrared switching in flexible VO2 nanoparticle films with reduced energy consumption for smart windows".Journal of Materials Chemistry A 7.9(2019):4516-4524.