期刊
APPLIED PHYSICS LETTERS
卷 101, 期 20, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4766167
关键词
absorption coefficients; density functional theory; magnesium; sputter deposition; thermo-optical effects; thin films; vanadium compounds; visible spectra
资金
- Swedish Research Council (VR)
Mg-doped VO2 thin films with thermochromic properties were made by reactive DC magnetron co-sputtering onto heated substrates, and spectral absorption was recorded at room temperature in the 0.5 < <(h)over bar>omega < 3.5 eV energy range. Clear evidence was found for a widening of the main band gap from 1.67 to 2.32 eV as the Mg/(V + Mg) atomic ratio went from zero to 0.19, thereby significantly lowering the luminous absorption. This technologically important effect could be reconciled with spin-polarized density functional theory calculations using the Heyd-Scuseria-Ernzerhof [Heyd et al., J. Chem. Phys. 118, 8207 (2003); ibid. 124, 219906 (2006)] hybrid functional. Specifically, the calculated luminous absorptance decreased when the Mg/(V + Mg) ratio was increased from 0.125 to 0.250. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4766167]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据