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Growth of ZnO thin films on sapphire substrates by ECR-assisted MBE

机译:ECR辅助MBE在蓝宝石衬底上生长ZnO薄膜

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摘要

Epitaxial ZnO films were grown on c-plane sapphire substrate at low temperature using the lectron cyclotron resonance-assisted molecular beam epitaxy (ECR-assisted MBE) technique. In this method, Zn vapor provided by a Knudsen cell reacts with oxygen activated in a ECR source on the surface of sapphire substrate. The crystal structure, surface morphology and epitaxial relationship of the films were investigated. It was confirmed that the ECR-assisted MBE technique was capable of growing a high auality epitaxial ZnO films on c-plane sapphire substrate was determined to be (0001)ZnO//(0001)Al_2O_3 with in -plane alignment of [1100]ZnO//[2110]Al_2O_3, which is equivalent to the 30 deg rotation of ZnO relative to sapphire in the c-plane.
机译:使用电子回旋加速器共振辅助分子束外延(ECR辅助MBE)技术在低温下在c面蓝宝石衬底上生长外延ZnO膜。在这种方法中,由Knudsen电池提供的Zn蒸气与在蓝宝石衬底表面上的ECR源中活化的氧气反应。研究了薄膜的晶体结构,表面形貌和外延关系。证实了ECR辅助MBE技术能够在c面蓝宝石衬底上生长高质量的外延ZnO膜,确定为(0001)ZnO //(0001)Al_2O_3,面内取向为[1100] ZnO // [2110] Al_2O_3,相当于ZnO在c平面中相对于蓝宝石旋转30度。

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