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通过硫被动阻断双层1T'-MoTe2的表面氧化动力学

Yadu Chandran¹, Deepa Thakur¹, B Raju Naik¹

¹School of Mechanical and Materials Engineering, Indian Institute of Technology, Mandi, Himachal Pradesh, 175075, India.

|June 13, 2023

概括

这项研究研究了1T的快速降解.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
纳米技术纳米技术

背景情况:

二甲化物 (MoTe2) 存在于具有独特电子特性的稳定多态体中.
1T'-MoTe2是大量的II型韦尔半金属和单层形式的量子自旋霍尔绝缘体,提供多种应用.
暴露在大气中导致1T'-MoTe2的快速降解,阻碍了设备的制造.

研究的目的:

研究化学蒸汽沉积 (CVD) 合成的1T'-MoTe2.2的降解动力学.
开发一种防止1T'-MoTe2.2降解的方法.

主要方法:

拉曼光谱法拉曼光谱法拉曼光谱法
在X射线光电子光谱学 (XPS) 中.
微观特征的描述

主要成果:

随着生长的1T'-MoTe2的降解率被确定为9.2 × 10^-3 min^-1.
一种薄薄的硫涂层有效地封装了1T'-MoTe2片,防止了降解.
保护硫的1T'-MoTe2在几天内表现出增强的结构稳定性,这是25倍的改善.

结论:

大气退化是1T'-MoTe2设备应用的一个重大挑战.
用薄薄的硫层封装是一种可行的策略,可以提高1T'-MoTe2.2的稳定性.
这种稳定方法为在各种电子设备中实际使用1T'-MoTe2开辟了道路.

关键词:

这就是MoTe2Te2的原因.化学蒸气沉积化学蒸气沉积降解动力学的降解动力学封装的封装方式结构稳定性结构稳定性

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