Issue 6, 2016

Effect of oxygen and ozone on p-type doping of ultra-thin WSe2 and MoSe2 field effect transistors

Abstract

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.

Graphical abstract: Effect of oxygen and ozone on p-type doping of ultra-thin WSe2 and MoSe2 field effect transistors

Supplementary files

Article information

Article type
Communication
Submitted
23 نومبر 2015
Accepted
13 جنؤری 2016
First published
13 جنؤری 2016

Phys. Chem. Chem. Phys., 2016,18, 4304-4309

Author version available

Effect of oxygen and ozone on p-type doping of ultra-thin WSe2 and MoSe2 field effect transistors

S. Wang, W. Zhao, F. Giustiniano and G. Eda, Phys. Chem. Chem. Phys., 2016, 18, 4304 DOI: 10.1039/C5CP07194A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements