Related Experiment Video
Updated: Apr 6, 2026

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Hydrogen-doping induced reduction in the phase transition temperature of VO2: a first-principles study
Yuanyuan Cui1, Siqi Shi, Lanli Chen
1School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China. sqshi@shu.edu.cn yfgao@shu.edu.cn.
Abstract:
VO2 is a promising thermochromic material that can intelligently control the transmittance of sunlight in the near-infrared region in response to temperature change, although the high phase transition temperature (Tc) of 340 K restricts its wide application. Our first-principles calculations show that hydrogen is an efficient dopant which can stabilize the metallic VO2 phase at ambient temperature through reducing Tc by 38 K/at% H. The reduction in Tc is coupled with the changes in atomic and electronic structures, i.e., the V-V chains feature the dimerization characteristics in H-doped VO2(R) and the V-O bonds become less ionic due to the formation of a typical H-O covalent bond. In addition, hydrogen-doped VO2 is more sensitive to external strain as compared with pure VO2, implying that Tc can be further regulated through a combination of H-doping and strain.
Related Concept Videos
Phase Transitions: Vaporization and Condensation
Phase Transitions: Sublimation and Deposition
Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Phase Transitions
Phase Transitions
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation

