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Control of the oxygen deficiency and work function of SrFeO3−δ thin films by excimer laser-assisted metal organic decomposition

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Abstract

The fabrication of crystalline oxide films using excimer laser-assisted metal organic decomposition (ELAMOD) involves deploying pulsed UV laser irradiation to achieve photochemical and photothermal reactions of metal–organic materials or amorphous oxide materials. In this study, ELAMOD was used to fabricate SrFeO3−δ thin films under various atmospheric conditions in order to clarify the effect of such conditions on ELAMOD-produced films. Analysis of lattice constants and work functions of the films revealed that performing ELAMOD in air and vacuum induced reduction while performing it in O2 induced oxidation. The extents of reduction and oxidation were enhanced by increasing the laser fluence. Such an ability to control reduction and oxidation when performing ELAMOD should be helpful for the fabrication of functional oxide films.

Graphical abstract: Control of the oxygen deficiency and work function of SrFeO3−δ thin films by excimer laser-assisted metal organic decomposition

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Article information


Submitted
23 Mar 2020
Accepted
26 May 2020
First published
27 May 2020

CrystEngComm, 2020, Advance Article
Article type
Paper

Control of the oxygen deficiency and work function of SrFeO3−δ thin films by excimer laser-assisted metal organic decomposition

Y. Matsubayashi, J. Nomoto, I. Yamaguchi and T. Tsuchiya, CrystEngComm, 2020, Advance Article , DOI: 10.1039/D0CE00442A

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