Enhanced luminous transmittance of thermochromic VO2 thin film patterned by SiO2 nanospheres

Liwei Zhou; Jiran Liang; Ming Hu; Peng Li; Xiaolong Song; Yirui Zhao; Xiaoyong Qiang

doi:10.1063/1.4983287

Enhanced luminous transmittance of thermochromic VO₂ thin film patterned by SiO₂ nanospheres

Liwei Zhou
, Jiran Liang
, Ming Hu
, Peng Li
, Xiaolong Song
, Yirui Zhao
, Xiaoyong Qiang

Tianjin University

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

32 Citations (Scopus)

Abstract

In this study, an ordered SiO₂ nanosphere array coated with vanadium dioxide (VO₂) has been fabricated to enhance transmittance with the potential application as an energy-efficient coating in the field of smart windows. SiO₂ arrays were formed using the methods of self-assembly, and VO₂ thin films were prepared by rapid thermal annealing (RTA) of sputtered vanadium films. VO₂@SiO₂ arrays were characterized by scanning electron microscopy, X-ray diffraction, a four-point probe, and UV-vis-NIR spectrophotometry. Compared with the planar films, the films deposited on 300 nm diameter SiO₂ nanospheres can offer approximately 18% enhancement of luminous transmission (T_lum) because the diameter is smaller than the given wavelength and the protuberance of the surface array behaves as a gradation of refractive index producing antireflection. The solar regulation efficiency was not much deteriorated.

Original language	English
Article number	193901
Journal	Applied Physics Letters
Volume	110
Issue number	19
DOIs	https://doi.org/10.1063/1.4983287
Publication status	Published - 8 May 2017
Externally published	Yes

Access to Document

10.1063/1.4983287

Cite this

@article{d61fa1f38dfc4785b5239e13f5b06a49,

title = "Enhanced luminous transmittance of thermochromic VO2 thin film patterned by SiO2 nanospheres",

abstract = "In this study, an ordered SiO2 nanosphere array coated with vanadium dioxide (VO2) has been fabricated to enhance transmittance with the potential application as an energy-efficient coating in the field of smart windows. SiO2 arrays were formed using the methods of self-assembly, and VO2 thin films were prepared by rapid thermal annealing (RTA) of sputtered vanadium films. VO2@SiO2 arrays were characterized by scanning electron microscopy, X-ray diffraction, a four-point probe, and UV-vis-NIR spectrophotometry. Compared with the planar films, the films deposited on 300 nm diameter SiO2 nanospheres can offer approximately 18\% enhancement of luminous transmission (Tlum) because the diameter is smaller than the given wavelength and the protuberance of the surface array behaves as a gradation of refractive index producing antireflection. The solar regulation efficiency was not much deteriorated.",

author = "Liwei Zhou and Jiran Liang and Ming Hu and Peng Li and Xiaolong Song and Yirui Zhao and Xiaoyong Qiang",

note = "Publisher Copyright: {\textcopyright} 2017 Author(s).",

year = "2017",

month = may,

day = "8",

doi = "10.1063/1.4983287",

language = "English",

volume = "110",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "19",

}

TY - JOUR

T1 - Enhanced luminous transmittance of thermochromic VO2 thin film patterned by SiO2 nanospheres

AU - Zhou, Liwei

AU - Liang, Jiran

AU - Hu, Ming

AU - Li, Peng

AU - Song, Xiaolong

AU - Zhao, Yirui

AU - Qiang, Xiaoyong

PY - 2017/5/8

Y1 - 2017/5/8

N2 - In this study, an ordered SiO2 nanosphere array coated with vanadium dioxide (VO2) has been fabricated to enhance transmittance with the potential application as an energy-efficient coating in the field of smart windows. SiO2 arrays were formed using the methods of self-assembly, and VO2 thin films were prepared by rapid thermal annealing (RTA) of sputtered vanadium films. VO2@SiO2 arrays were characterized by scanning electron microscopy, X-ray diffraction, a four-point probe, and UV-vis-NIR spectrophotometry. Compared with the planar films, the films deposited on 300 nm diameter SiO2 nanospheres can offer approximately 18% enhancement of luminous transmission (Tlum) because the diameter is smaller than the given wavelength and the protuberance of the surface array behaves as a gradation of refractive index producing antireflection. The solar regulation efficiency was not much deteriorated.

AB - In this study, an ordered SiO2 nanosphere array coated with vanadium dioxide (VO2) has been fabricated to enhance transmittance with the potential application as an energy-efficient coating in the field of smart windows. SiO2 arrays were formed using the methods of self-assembly, and VO2 thin films were prepared by rapid thermal annealing (RTA) of sputtered vanadium films. VO2@SiO2 arrays were characterized by scanning electron microscopy, X-ray diffraction, a four-point probe, and UV-vis-NIR spectrophotometry. Compared with the planar films, the films deposited on 300 nm diameter SiO2 nanospheres can offer approximately 18% enhancement of luminous transmission (Tlum) because the diameter is smaller than the given wavelength and the protuberance of the surface array behaves as a gradation of refractive index producing antireflection. The solar regulation efficiency was not much deteriorated.

UR - https://www.scopus.com/pages/publications/85019057319

U2 - 10.1063/1.4983287

DO - 10.1063/1.4983287

M3 - Article

AN - SCOPUS:85019057319

SN - 0003-6951

VL - 110

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 193901

ER -

Enhanced luminous transmittance of thermochromic VO₂ thin film patterned by SiO₂ nanospheres

Abstract

Access to Document

Other files and links

Fingerprint

Cite this