研究論文
2重殻構造を有する蛍光シリコンナノ粒子の合成と電気泳動法による薄膜形成
キーワード:
electrophoretic deposition,
silicon nanocrystals,
photoluminescence,
composite,
thermal stability
2018 年 65 巻 2 号 p. 108-113
詳細
2018 年 65 巻 2 号 p. 108-113
Here we show an electrophoretic deposition process for a uniform coating of glass substrate surface with fluorescent silicon nanocrystals (SiNCs). The NCs with ~35% of photoluminescence quantum yields (PLQYs) were synthesized by thermal disproportionation of hydrogen silsesquioxane, followed by hydrosilylation of 1-decence. Next, the hollow-silica particles that are crammed of the decane-terminated NCs were prepared by taking advantage of a vacuum impregnation process. The PL spectra were measured as a function of temperature for films of NCs before and after silica encapsulation. It was observed that a rapid decrease of PL intensity with elevated temperature for the hydrogen-terminated NCs whereas the silica capsule suppresses a thermal quenching to give PL stability at high temperature. The presence of a silica capsule also allows electrophoretic deposition of the NCs to the surface of an ITO glass substrate.
