ナノ構造を利用した透明酸化物の機能開拓―細野透明電子活性プロジェクトの成果から―
2004 年 46 巻 1 号 p. 48-52
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2004 年 46 巻 1 号 p. 48-52
Realization of novel functions in transparent oxides utilizing intrinsic nanostructures in their crystal structures are discussed by taking layered compounds, InGaO3 (ZnO) m and LnCuOS/Se as examples. The layered structure forms“natural superlattice”or“multi-quantum well”, providing distinct features due to the electron confinement to the nano-sized layers including efficient blue emission and large nonlinear optical susceptibility associated with“room temperature exciton”and degenerated p-type conduction by“modulation doping”. These features allow for realizing emerging devices such as all optical switches and high mobility transparent field effect transistor.
