Ethanol sensing enhancement of low-coast sprayed alpha-Fe2O3 films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405446" target="_blank" >RIV/00216208:11320/19:10405446 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=e-sQDpq0Q7" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=e-sQDpq0Q7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/2053-1591/ab5691" target="_blank" >10.1088/2053-1591/ab5691</a>

Result language

angličtina

Original language name

Ethanol sensing enhancement of low-coast sprayed alpha-Fe2O3 films

Original language description

This work reports the manufacture and the characterization of alpha-Fe2O3 thin and thick films grown on glass substrates at 350 degrees C using the chemical spray technique and subsequently modified by thermal annealing at 450 degrees C. The Crystalline structure, the surface morphology and the optical properties of the films were investigated. The decreases of the alpha-Fe2O3 film thickness affect all physical properties by improving the optical, structural and mostly ethanol sensing properties wherein we note an improvement of ethanol response from 4 under 5000 ppm for thick layer to 13 under only 100 ppm for thin layer. We note also for this layer, an improvement of phase purity which is confirmed by the increases of optical bandgap from 2.15 eV to 2.19 eV, with guarding the same preferred direction (104). Under ethanol alpha-Fe2O3 thick films exhibit a transition from n to p-type conductivity whereas thin films exhibit only p-type conductivity, the detection mechanism of this behavior was attributed mainly to grain size effects.

Czech name

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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

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Materials Research Express

ISSN

2053-1591

e-ISSN

—

Volume of the periodical

6

Issue of the periodical within the volume

12

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

126409

UT code for WoS article

000499423800001

EID of the result in the Scopus database

2-s2.0-85076363979