単結晶ダイヤモンド粒からの電界放出

抄録

Electron field emission properties of single crystal diamond particles have been investigated in order to lead higher emission current and to discuss the mechanism of electron emission. Emission current was measured by applying voltage between diamond particles and a glass plate anode coated with ITO thin film. Diamond particles were treated in plasma and by heat before measurement and placed in various arrangement manner on a metal substrate with conductive glue. As a result, higher emission current has been occurred from diamond particles treated with hydrogen plasma, that is supposed to form conductive layer on diamond surface. Moreover, direction of a tip of diamond particles towards the anode has led higher emission current. The emission current has increased with the number of diamond particles arranged and varied with the distance between diamond particles and the anode.