Material and device properties of superacid-treated monolayer molybdenum disulfide
Material and device properties of superacid-treated monolayer molybdenum disulfide
复制标题
DOI：
10.1063/1.4974046
复制
发表时间：
2017-01-16
影响因子：
4
通讯作者：
Shahrjerdi, Davood
中科院分区：
文献类型：
--
作者：
Alharbi, Abdullah;Zahl, Percy;Shahrjerdi, Davood
研究了双（三氟甲烷）磺酰亚胺超强酸化学处理对化学气相沉积单层二硫化钼材料和器件性能的影响。我们的空间分辨光致发光（PL）测量和器件研究揭示了两个关键的发现，由于化学处理：（1）显着的转变的trions中性激子，和（2）超过7倍的减少中间隙陷阱态的密度。具体而言，扫描俄歇显微镜和PL映射的组合揭示了超强酸处理是有效的钝化硫缺乏的区域。出版社：AIP Publishing
We study the effects of chemical treatment with bis(trifluoromethane) sulfonimide superacid on material and device properties of monolayer molybdenum disulfide grown by chemical vapor deposition. Our spatially resolved photoluminescence (PL) measurements and device studies reveal two key findings due to the chemical treatment: (1) noticeable transformation of trions to neutral excitons, and (2) over 7-fold reduction in the density of mid-gap trap states. Specifically, a combination of scanning Auger microscopy and PL mapping reveals that the superacid treatment is effective in passivating the sulfur-deficient regions. Published by AIP Publishing.