中国物理B ›› 2022, Vol. 31 ›› Issue (5): 57804-057804.doi: 10.1088/1674-1056/ac598a

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First principles investigation on Li or Sn codoped hexagonal tungsten bronzes as the near-infrared shielding material

Bo-Shen Zhou(周博深)1,2, Hao-Ran Gao(高浩然)1,2, Yu-Chen Liu(刘雨辰)1,2, Zi-Mu Li(李子木)1,2, Yang-Yang Huang(黄阳阳)1,2, Fu-Chun Liu(刘福春)1,†, and Xiao-Chun Wang(王晓春)1   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 College of Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2021-06-16 修回日期:2022-02-28 发布日期:2022-04-29
  • 通讯作者: Fu-Chun Liu,E-mail:lfc@jlu.edu.cn E-mail:lfc@jlu.edu.cn

First principles investigation on Li or Sn codoped hexagonal tungsten bronzes as the near-infrared shielding material

Bo-Shen Zhou(周博深)1,2, Hao-Ran Gao(高浩然)1,2, Yu-Chen Liu(刘雨辰)1,2, Zi-Mu Li(李子木)1,2, Yang-Yang Huang(黄阳阳)1,2, Fu-Chun Liu(刘福春)1,†, and Xiao-Chun Wang(王晓春)1   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 College of Physics, Jilin University, Changchun 130012, China
  • Received:2021-06-16 Revised:2022-02-28 Published:2022-04-29
  • Contact: Fu-Chun Liu,E-mail:lfc@jlu.edu.cn E-mail:lfc@jlu.edu.cn
  • About author:2022-3-2

摘要: The 52% energy of the solar radiation is contributed by near-infrared radiation (NIR, 780-2500 nm). Therefore, the material design for the energy-saving smart window, which can effectively shield NIR and has acceptable visible transmittance, is vital to save the energy consumed on the temperature control system. It is important to find a non-toxic stable material with excellent NIR-shielding ability and acceptable visible transmittance. The systematic first-principles study on LixSnyWO3 (x=0, 0.33, 0.66, and y=0, 0.33) exhibits that the chemical stability is a positive correlation with the doping concentration. After doping, the Fermi-energy upshifts into the conduction band, and the material shows metal-like characteristics. Therefore, these structures LixSnyWO3 (except the structure with x=0.33 and y=0) show pronounced improvement of NIR shielding ability. Our results indicate that when x=0 and y=0.33, the material exhibits the strongest NIR-shielding ability, satisfying chemical stability, wide NIR-shielding range (780-2500 nm), and acceptable visible transmittance. This work provides a good choice for experimental study on NIR shielding material for the energy-saving window.

关键词: density functional theory, electronic structure, near-infrared radiation shielding material

Abstract: The 52% energy of the solar radiation is contributed by near-infrared radiation (NIR, 780-2500 nm). Therefore, the material design for the energy-saving smart window, which can effectively shield NIR and has acceptable visible transmittance, is vital to save the energy consumed on the temperature control system. It is important to find a non-toxic stable material with excellent NIR-shielding ability and acceptable visible transmittance. The systematic first-principles study on LixSnyWO3 (x=0, 0.33, 0.66, and y=0, 0.33) exhibits that the chemical stability is a positive correlation with the doping concentration. After doping, the Fermi-energy upshifts into the conduction band, and the material shows metal-like characteristics. Therefore, these structures LixSnyWO3 (except the structure with x=0.33 and y=0) show pronounced improvement of NIR shielding ability. Our results indicate that when x=0 and y=0.33, the material exhibits the strongest NIR-shielding ability, satisfying chemical stability, wide NIR-shielding range (780-2500 nm), and acceptable visible transmittance. This work provides a good choice for experimental study on NIR shielding material for the energy-saving window.

Key words: density functional theory, electronic structure, near-infrared radiation shielding material

中图分类号:  (Optical properties of bulk materials and thin films)

  • 78.20.-e
88.40.fh (Advanced materials development) 95.85.Jq (Near infrared (0.75-3 μm))