首页> 外文期刊>Applied Physics Letters >Fabrication of Ta_2O_5/GeN_x gate insulator stack for Ge metal-insulator-semiconductor structures by electron-cyclotron-resonance plasma nitridation and sputtering deposition techniques
【24h】

Fabrication of Ta_2O_5/GeN_x gate insulator stack for Ge metal-insulator-semiconductor structures by electron-cyclotron-resonance plasma nitridation and sputtering deposition techniques

机译:电子回旋共振等离子体氮化和溅射沉积技术制备Ge金属绝缘体结构Ta_2O_5 / GeN_x栅绝缘体

获取原文
获取原文并翻译 | 示例
           

摘要

The authors have fabricated germanium (Ge) metal-insulator-semiconductor (MIS) structures with a 7-nm-thick tantalum pentaoxide (Ta_2O_5)/2-nm-thick germanium nitride (GeN_x) gate insulator stack by electron-cyclotron-resonance plasma nitridation and sputtering deposition. They found that pure GeN_x ultrathin layers can be formed by the direct plasma nitridation of the Ge surface without substrate heating. X-ray photoelectron spectroscopy revealed no oxidation of the GeN_x layer after the Ta_2O_5 sputtering deposition. The fabricated MIS capacitor with a capacitance equivalent thickness of 4.3 nm showed excellent leakage current characteristics. The interface trap density obtained by the modified conductance method was 4 X 10~(11) cm~(-2) eV~(-1) at the midgap.
机译:作者通过电子回旋共振等离子体制造了具有7nm厚的五氧化二钽(Ta_2O_5)/ 2nm厚的氮化锗(GeN_x)栅绝缘体叠层的锗(Ge)金属-绝缘体-半导体(MIS)结构氮化和溅射沉积。他们发现,可以在不加热衬底的情况下通过直接对Ge表面进行等离子体氮化来形成纯GeN_x超薄层。 X射线光电子能谱显示Ta_2O_5溅射沉积后GeN_x层没有氧化。所制成的MIS电容器的等效电容厚度为4.3 nm,具有出色的漏电流特性。通过改进的电导方法获得的界面陷阱密度在中隙处为4 X 10〜(11)cm〜(-2)eV〜(-1)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号