Mg/W-codoped vanadium dioxide thin films with enhanced visible transmittance and low phase transition temperature

被引：151

作者：

Wang, Ning ^{[1
]}

Liu, Shiyu ^{[2
]}

Zeng, X. T. ^{[2
]}

Magdassi, Shlomo ^{[3
]}

Long, Yi ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Singapore Inst Mfg Technol, Singapore 638075, Singapore

[3] Hebrew Univ Jerusalem, Inst Chem, IL-91904 Jerusalem, Israel

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2015年 / 3卷 / 26期

基金：

新加坡国家研究基金会;

关键词：

VO2; NANOPARTICLES; SOLAR MODULATION; THERMOCHROMIC PROPERTIES; LUMINOUS TRANSMITTANCE; INSULATOR-TRANSITION; OPTICAL-PROPERTIES; SMART WINDOW; TRANSMISSION; FOILS;

D O I：

10.1039/c5tc01062d

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Vanadium dioxide (VO2), with a reversible phase transition near ambient temperature, has been found to be a promising candidate for energy-saving smart windows. However, its use is constrained by its low visible transmission (T-lum) and high transition temperature (tau(C)). In this paper, by codoping tungsten (W) and magnesium (Mg) in VO2, a good combination of low tau(C) (similar to 35 degrees C) and high T-lum (81.3%) was achieved. The tau(C) declines with decreasing Mg doping level in Mg/W-codoped samples, which is the opposite effect of doping with only Mg, suggesting a synergistic effect of the two dopants arising from the e and h(+) carrier neutralization. In addition, the band gap of Mg/W-codoped VO2 was gradually widened; this is attributed to the depressed absorption, which enhanced the T-lum.

引用

页码：6771 / 6777

页数：7

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