Adsorption Site-Dependent Mobility Behavior in Graphene Exposed to Gas Oxygen

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00498916" target="_blank" >RIV/61388955:_____/18:00498916 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/18:73590066

Result on the web

<a href="http://dx.doi.org/10.1021/acs.jpcc.8b06906" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.8b06906</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.8b06906" target="_blank" >10.1021/acs.jpcc.8b06906</a>

Result language

angličtina

Original language name

Adsorption Site-Dependent Mobility Behavior in Graphene Exposed to Gas Oxygen

Original language description

Transport characteristics of graphene field-effect transistors were measured in situ in oxygen/nitrogen atmospheres and at various temperatures. Mobilities of holes were extracted from transport characteristics as well as the doping level depending on the time of graphene exposure to oxygen/nitrogen atmosphere. The hole mobility showed significant decrease upon the oxygen adsorption to low energy adsorption sites (sp(2) carbon). However, it remained unaffected by the oxygen adsorption to high-energy adsorption sites which are represented by defects, impurities, transfer residuals, edges, and functional groups on graphene. The Dirac point was upshifted for both the low- and high-energy adsorption events. Activation energy of oxygen adsorption/desorption was estimated from temperature-dependent desorption rate coefficients as 215 and 450 meV for the low- and high-energy adsorption sites, respectively.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Volume of the periodical

122

Issue of the periodical within the volume

37

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

21493-21499

UT code for WoS article

000445711100042

EID of the result in the Scopus database

2-s2.0-85053787931