在任意基板上双层介导的英寸大小单层MoS2的增长
Juntong Zhu1, Hao Xu2, Guifu Zou1
1College of Energy , Soochow Institute for Energy and Materials Innovations, and Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province , Soochow University , Suzhou 215006 , China.
Journal of the American Chemical Society
|March 9, 2019
概括
研究人员开发了一种MoS2-OH双层方法,用于在各种基板上制造大规模,高质量的单层二硫化物 (MoS2). 这种技术增强了电子特性,并防止了先进的光电子产品的氧化.
科学领域:
- 材料科学
- 纳米技术
- 凝聚物质物理学
背景情况:
- 单层二硫化物 (MoS2) 具有出色的电子,光学和机械性能,非常适用于电子和光电子设备.
- 阻碍MoS2的实际应用的一个重大挑战是难以实现高质量,大规模的单层生长.
研究的目的:
- 在任意基板上制造英寸大小的高质量单层MoS2的新型MoS2-OH双层介导方法.
- 证明氧化组在控制MoS2增长和提高材料质量的有效性.
主要方法:
- 使用首选附着在MoS2 (001) 表面的氧化物组形成了MoS2-OH双层结构.
- 用密度函数理论计算来了解氧化物组在减少缺陷和空缺方面的作用.
- 该方法用于在各种基板上生长MoS2,包括蓝宝石,,SiO2,石英,Si,SiC,Si3N4和石墨烯.
主要成果:
- 通过MoS2-OH双层方法成功地产生了英寸大小的均单层MoS2.
- 获得了高质量的单层MoS2,单晶域超过200μm.
- 制造的MoS2具有大约30cm2V-1s-1的载体移动性和对接口氧化的抵抗力.
结论:
- 双层MoS2-OH介导的方法为生产高质量的单层MoS2提供了可扩展和有效的途径.
- 这种方法显著提高了MoS2在电子和光电子应用中的潜力.
- 该技术可适应其他二维过渡金属二甲基化物的单层生长,如WS2和MoSe2.
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