W-VO2/Cs0.32WO3Composite Flexible Films: Promoted Metal-Insulator Transition and Enhanced Near-Infrared Shielding

Shanshan Deng; Qingfeng Chang; Donglai Li; Boyu Wang; Haibo Jin; Jingbo Li

doi:10.1021/acsaem.1c03685

W-VO₂/Cs_0.32WO₃Composite Flexible Films: Promoted Metal-Insulator Transition and Enhanced Near-Infrared Shielding

Shanshan Deng, Qingfeng Chang, Donglai Li, Boyu Wang, Haibo Jin, Jingbo Li^*

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

VO₂is a promising candidate for smart energy-saving windows because of its unique thermochromism but suffers from a high transition temperature of 68 °C and poor thermochromic performance near room temperature. We fabricated a W-VO₂/Cs_0.32WO₃(CWO) composite flexible film, which shows a low transition temperature of 31.1 °C (W-VO₂/CWO = 1:1) and much enhanced near-infrared shielding performance. The optimal W-VO₂+ 0.5CWO reaches a desired near-infrared shielding efficiency of 76.34%. A model-house test under simulated solar irradiation further signifies the excellence of the W-VO₂+ 0.5CWO composite flexible film under ambient conditions. The robust performance is attributed to the synergetic effects between W-VO₂and Cs_0.32WO₃, among which the former possesses a low MIT transition temperature and the latter possesses photo-thermal performance.

Original language	English
Pages (from-to)	3064-3071
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	5
Issue number	3
DOIs	https://doi.org/10.1021/acsaem.1c03685
Publication status	Published - 28 Mar 2022

Keywords

CsWO
VO-based composite film
energy-saving windows
near-infrared shielding
thermochromism

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10.1021/acsaem.1c03685

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title = "W-VO2/Cs0.32WO3Composite Flexible Films: Promoted Metal-Insulator Transition and Enhanced Near-Infrared Shielding",

abstract = "VO2is a promising candidate for smart energy-saving windows because of its unique thermochromism but suffers from a high transition temperature of 68 °C and poor thermochromic performance near room temperature. We fabricated a W-VO2/Cs0.32WO3(CWO) composite flexible film, which shows a low transition temperature of 31.1 °C (W-VO2/CWO = 1:1) and much enhanced near-infrared shielding performance. The optimal W-VO2+ 0.5CWO reaches a desired near-infrared shielding efficiency of 76.34%. A model-house test under simulated solar irradiation further signifies the excellence of the W-VO2+ 0.5CWO composite flexible film under ambient conditions. The robust performance is attributed to the synergetic effects between W-VO2and Cs0.32WO3, among which the former possesses a low MIT transition temperature and the latter possesses photo-thermal performance.",

keywords = "CsWO, VO-based composite film, energy-saving windows, near-infrared shielding, thermochromism",

author = "Shanshan Deng and Qingfeng Chang and Donglai Li and Boyu Wang and Haibo Jin and Jingbo Li",

year = "2022",

month = mar,

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doi = "10.1021/acsaem.1c03685",

language = "English",

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T1 - W-VO2/Cs0.32WO3Composite Flexible Films

T2 - Promoted Metal-Insulator Transition and Enhanced Near-Infrared Shielding

AU - Deng, Shanshan

AU - Chang, Qingfeng

AU - Li, Donglai

AU - Wang, Boyu

AU - Jin, Haibo

AU - Li, Jingbo

PY - 2022/3/28

Y1 - 2022/3/28

N2 - VO2is a promising candidate for smart energy-saving windows because of its unique thermochromism but suffers from a high transition temperature of 68 °C and poor thermochromic performance near room temperature. We fabricated a W-VO2/Cs0.32WO3(CWO) composite flexible film, which shows a low transition temperature of 31.1 °C (W-VO2/CWO = 1:1) and much enhanced near-infrared shielding performance. The optimal W-VO2+ 0.5CWO reaches a desired near-infrared shielding efficiency of 76.34%. A model-house test under simulated solar irradiation further signifies the excellence of the W-VO2+ 0.5CWO composite flexible film under ambient conditions. The robust performance is attributed to the synergetic effects between W-VO2and Cs0.32WO3, among which the former possesses a low MIT transition temperature and the latter possesses photo-thermal performance.

AB - VO2is a promising candidate for smart energy-saving windows because of its unique thermochromism but suffers from a high transition temperature of 68 °C and poor thermochromic performance near room temperature. We fabricated a W-VO2/Cs0.32WO3(CWO) composite flexible film, which shows a low transition temperature of 31.1 °C (W-VO2/CWO = 1:1) and much enhanced near-infrared shielding performance. The optimal W-VO2+ 0.5CWO reaches a desired near-infrared shielding efficiency of 76.34%. A model-house test under simulated solar irradiation further signifies the excellence of the W-VO2+ 0.5CWO composite flexible film under ambient conditions. The robust performance is attributed to the synergetic effects between W-VO2and Cs0.32WO3, among which the former possesses a low MIT transition temperature and the latter possesses photo-thermal performance.

KW - CsWO

KW - VO-based composite film

KW - energy-saving windows

KW - near-infrared shielding

KW - thermochromism

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U2 - 10.1021/acsaem.1c03685

DO - 10.1021/acsaem.1c03685

M3 - Article

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VL - 5

SP - 3064

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JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 3

ER -

W-VO₂/Cs_0.32WO₃Composite Flexible Films: Promoted Metal-Insulator Transition and Enhanced Near-Infrared Shielding

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Keywords

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