Presentation Information
[9p-N107-10]Control of optical, electrical and thermal properties of the thin films by metal-semiconductor phase-change caused by hydro-/dehydrogenation reactions (5): Thermal conductivity of GdHx films.
〇(M2)Nanase Takahashi1, Riko Hirata1, Yuichiro Yamashita1,2, Minseok Kim1, Yuki Oguchi1, Takashi Yagi1,2, Naoyuki Taketoshi1,2, Yuzo Shigesato1 (1.Aoyama Gakuin Univ., 2.AIST)
Keywords:
GdHx,Switchable mirror material,Thermal conductivity switching
A thermal switch, which can control the heat flow using high (ON) and low (OFF) thermal conductivity states, has been attracted as an emerging heat control technology.
The switchable mirror film is controlled reversibly between a high thermal conductivity (metal) and a low thermal conductivity (semiconductor) in a hydro-/dehydrogenation reactions.
In this study, we focused on GdHx, known as the switchable mirror and conducted hydro-/dehydrogenation reactions using the gasochromic (GC) method, in which the films were exposed to Ar+H2 (3 %) gas mixture or atmosphere, and the electrochromic (EC) method, in which the reactions were electrochemically controlled in an electrolytic solution. The thermal conductivity of the film was measured using a time-domain thermoreflectance (TDTR) method.
The switchable mirror film is controlled reversibly between a high thermal conductivity (metal) and a low thermal conductivity (semiconductor) in a hydro-/dehydrogenation reactions.
In this study, we focused on GdHx, known as the switchable mirror and conducted hydro-/dehydrogenation reactions using the gasochromic (GC) method, in which the films were exposed to Ar+H2 (3 %) gas mixture or atmosphere, and the electrochromic (EC) method, in which the reactions were electrochemically controlled in an electrolytic solution. The thermal conductivity of the film was measured using a time-domain thermoreflectance (TDTR) method.