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Cited by 308

The DOI matches its Crossref record; 58 of the 58 references it cites were found in a registry or an index.

Environment-Sensitive Photoresponse of Spontaneously Partially Oxidized Ti3C2 MXene Thin Films

Chertopalov, Sergii, Mochalin, Vadym N.·2018·ACS Nano

Abstract

A large family of two-dimensional transition metal carbides and nitrides (MXenes) has increasingly raised interest for electronic and optoelectronic applications due to their high electrical conductivity, potentially tunable electronic structure, nonlinear optical properties, and ability to be manufactured in the thin film state. During delamination and storage in ambient air environment, spontaneous oxidation of MXene flakes leads to formation of titanium oxide, a process that, as we demonstrate here, can be harnessed for manufacturing MXene-titania composites for optoelectronics, sensing, and other applications. We show that partially oxidized MXene thin films containing the in situ formed phase of titanium oxide have a significant photoresponse in the UV region of the spectrum. The relaxation process of photoexcited charge carriers takes a long time (∼24 h) but can be accelerated in the presence of oxygen and water vapor in the atmosphere. These properties of spontaneously formed MXene-titania thin films make them attractive materials for photoresistors with memory effect and sensitivity to the environment, as well as many other photo- and environment-sensing applications.

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Metadata

Authors
Chertopalov, S., & Mochalin, V. N.
Venue
ACS Nano
Published
2018-06-08
Volume
12
Issue
6
Pages
6109-6116
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2806637614
Cited by
308
References
58
FWCI
9.85
Type
journal article
Language
en
Open access
closed

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