期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 18, 期 6, 页码 4304-4309出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp07194a
关键词
-
资金
- National Research Foundation, Prime Minister's Office, Singapore under NRF Research Fellowship [NRF-NRFF2011-02]
We report on the p-type doping effect of oxygen and ozone molecules on mono- and few-layer WSe2 and MoSe2 field effect transistors. We show that adsorption of oxygen and ozone under ambient conditions results in subtantial doping and corresponding enhancement in the hole conductivity of the devices. Ozone-induced doping is found to be rapid and efficient, saturating within minutes of exposure whereas oxygen-induced doping occurs over a period of days to reach the equivalent level of doping. Our observations reveal that the water adlayer on the material surface plays a crucial role in solubilizing oxygen and ozone and in forming a redox couple with a large chemical potential.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据