Phase Transition Hysteresis of Tungsten Doped VO2Synergistically Boosts the Function of Smart Windows in Ambient Conditions

Shen，Nan1; Chen，Shi1; Shi，Run1; Niu，Shuzhang1; Amini，Abbas4; Cheng，Chun1,2,3

2021

10.1021/acsaelm.1c00550

ACS Applied Electronic Materials   影响因子和分区

2637-6113

The critical challenge for the practical applications of VO2-based smart windows is to nucleate and propagate the phase transformation in the ambient condition while maintaining a balance between solar energy regulation and visible light transmittance. Doping proves effective in the modification of the thermochromic performance in VO2 but always causes unfavorable degradation accompanied with the significant reduction of phase transition temperature. Joule heating has been introduced in VO2-based devices to activate the metal-insulator transition (MIT) at ambient temperature. A synergy between these two strategies is necessary to achieve a well-balanced performance of VO2 films at the appropriate temperature. Here, we systematically investigate the thermochromic properties of tungsten (W)-doped VO2 composite films with Joule heating triggered MIT. The phase transition temperature of VO2 is effectively decreased by 21.6 °C per at. % W, and the balanced luminous transmittance (Tlum = 50.8%) and solar energy modulation ability (ΔTsol = 11.4%) are achieved at 0.6 at. % W doping. Importantly, as a synergetic result of W doping and hysteresis behavior of MIT in VO2, the optimal infrared blocking performance can be retained at a reduced cost of energy consumption and at the ambient temperature down to 47 °C. This is comparable to the glass window temperature in the summer in subtropical and tropical regions. This result suggests quite low and even zero energy consumption to maintain the optimal infrared blocking performance of VO2 films. This study provides a practical and advanced setup for operable and efficient smart windows in ambient conditions.

hysteresis infrared blocking Joule heating smart window W-doped vanadium dioxide

SCI ; EI

英语

第一 ; 通讯

Foundation of Shenzhen Science and Technology Innovation Committee[JCYJ20180302174026262] ; National Natural Science Foundation of China[51776094,91963129] ; Basic Research Project of Science and Technology of Shenzhen[JCYJ20180504165655180] ; Key Laboratory Foundation of Energy Materials for Electric Power of Guangdong[2018B030322001]

Engineering ; Materials Science

Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary

WOS:000691307300040

AMER CHEMICAL SOC

20213310784842

Composite films ; Energy policy ; Energy utilization ; Hysteresis ; Joule heating ; Metal insulator boundaries ; Semiconductor doping ; Semiconductor insulator boundaries ; Solar energy ; Stained glass ; Temperature ; Tropics ; Tungsten ; Vanadium dioxide

Meteorology:443 ; Energy Utilization:525.3 ; Energy Policy:525.6 ; Tungsten and Alloys:543.5 ; Thermodynamics:641.1 ; Solar Energy and Phenomena:657.1 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Glass:812.3 ; Systems Science:961

2-s2.0-85112560754

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Ministry of Education,Key Laboratory of Energy Conversion and Storage Technology (Southern University of Science and Technology),Shenzhen,518055,China
3.Key Laboratory of Energy Materials for Electric Power of Guangdong,Shenzhen,518055,China
4.Center for Infrastructure Engineering,Western Sydney University,Kingswood,2751,Australia

Shen，Nan,Chen，Shi,Shi，Run,et al. Phase Transition Hysteresis of Tungsten Doped VO2Synergistically Boosts the Function of Smart Windows in Ambient Conditions[J]. ACS Applied Electronic Materials,2021,3(8):3648-3656.

Shen，Nan,Chen，Shi,Shi，Run,Niu，Shuzhang,Amini，Abbas,&Cheng，Chun.(2021).Phase Transition Hysteresis of Tungsten Doped VO2Synergistically Boosts the Function of Smart Windows in Ambient Conditions.ACS Applied Electronic Materials,3(8),3648-3656.

Shen，Nan,et al."Phase Transition Hysteresis of Tungsten Doped VO2Synergistically Boosts the Function of Smart Windows in Ambient Conditions".ACS Applied Electronic Materials 3.8(2021):3648-3656.