Presentation Information
[9p-N107-11]Control of optical, electrical and thermal properties of the thin films by metal-semiconductor phase-change caused by hydro-/dehydrogenation reactions (6): Thermal conductivity of SmHx films
〇(M2)Kota Yamada1, Yuichiro Yamashita1,2, Miki Ueno1, Minseok Kim1, Yuki Oguchi1, Takashi Yagi1,2, Naoyuki Taketoshi1,2, Yuzo Shigesato1 (1.Aoyama Gakuin Univ., 2.AIST)
Keywords:
SmHx,switchable mirror material,thermal conductivity switching
The switchable mirror materials (SMMs) can change between semiconductor (transparent) and metallic (mirror) states reversibly by hydro-/dehydrogenations. Therefore, drastic changes can be expected not only in the optical transmittance, but also in the thermal conductivity. The purpose of this study is to investigate the potential of SmHx films, where Sm is one of the SMMs, as for the high-performance thermal switches using the SMMs.
There are two ways to switch the switchable mirrors: gasochromic (GC) method uses hydrogen gas to hydrogenate films, while electrochromic (EC) method uses electrochemical proton-injections with an electrolyte liquid. In this study, we adopted the both switching methods to control the hydro-/dehydrogenations for SmHx film.
The thermal conductivity was measured using an in-situ rear-heating/ rear-detection type TDTR apparatus. The thermal conductivities through the in-situ analyses will be reported in detail at the presentation.
There are two ways to switch the switchable mirrors: gasochromic (GC) method uses hydrogen gas to hydrogenate films, while electrochromic (EC) method uses electrochemical proton-injections with an electrolyte liquid. In this study, we adopted the both switching methods to control the hydro-/dehydrogenations for SmHx film.
The thermal conductivity was measured using an in-situ rear-heating/ rear-detection type TDTR apparatus. The thermal conductivities through the in-situ analyses will be reported in detail at the presentation.