Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/171096
Title: | Spatial defects nanoengineering for bipolar conductivity in MoS2 |
Author: | Zheng, Xiaorui Calò, Annalisa Cao, Tengfei Liu, Xiangyu Huang, Zhujun Das, Paul Masih Drndic, Marija Albisetti, Edoardo Lavini, Francesco Narang, Vishal King, William P Harrold, John W Vittadello, Michele Aruta, Carmela Shahrjerdi, Davood Riedo, Elisa |
Keywords: | Molibdè Enllaços químics Biomecànica Molybdenum Chemical bonds Biomechanics |
Issue Date: | 10-Jul-2020 |
Publisher: | Nature Publishing Group |
Abstract: | Understanding the atomistic origin of defects in two-dimensional transition metal dichalcogenides, their impact on the electronic properties, and how to control them is critical for future electronics and optoelectronics. Here, we demonstrate the integration of thermochemical scanning probe lithography (tc-SPL) with a flow-through reactive gas cell to achieve nanoscale control of defects in monolayer MoS2. The tc-SPL produced defects can present either p- or n-type doping on demand, depending on the used gasses, allowing the realization of field effect transistors, and p-n junctions with precise sub-μm spatial control, and a rectification ratio of over 104. Doping and defects formation are elucidated by means of X-Ray photoelectron spectroscopy, scanning transmission electron microscopy, and density functional theory. We find that p-type doping in HCl/H2O atmosphere is related to the rearrangement of sulfur atoms, and the formation of protruding covalent S-S bonds on the surface. Alternatively, local heating MoS2 in N2 produces n-character. |
Note: | Reproducció del document publicat a: https://doi.org/10.1038/s41467-020-17241-1 |
It is part of: | Nature Communications, 2020, vol. 11, num. 1, p. 1-12 |
URI: | http://hdl.handle.net/2445/171096 |
Related resource: | https://doi.org/10.1038/s41467-020-17241-1 |
ISSN: | 2041-1723 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
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