Issue 40, 2020
From the journal:

Journal of Materials Chemistry C

Experimental evidence of wide bandgap in triclinic (001)-oriented Sn5O2(PO4)2 thin films on Y2O3 buffered glass substrates†

Michitaka Fukumoto, ORCID logo *ab   Chang Yang, ORCID logo *ac   Wenlei Yu,ad   Christian Patzig, ORCID logo e   Thomas Höche, ORCID logo e   Thomas Ruf,f   Reinhard Denecke, ORCID logo f   Michael Lorenz ORCID logo *a  and  Marius Grundmann ORCID logo a  

* Corresponding authors

a Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstraße 5, Leipzig 04103, Germany
E-mail: pon@chem.s.u-tokyo.ac.jp, chang.yang@physik.uni-leipzig.de, mlorenz@physik.uni-leipzig.de

b Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan

c Key Laboratory of Polar Materials and Devices (MOE), and Department of Electronics, East China Normal University, Shanghai, China

d School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Chashan Campus, Chashan University Town, Wenzhou, Zhejiang Province 325035, China

e Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Walter-Hülse-Straße 1, Halle (Saale) 06120, Germany

f Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, Leipzig 04103, Germany

Abstract

Sn5O2(PO4)2 is a promising p-type transparent semiconducting oxide. Phase-pure triclinic Sn5O2(PO4)2 thin films were grown by pulsed laser deposition using a Sn2(P2O7) target with higher phosphorus content. The (001)-oriented growth of triclinic Sn5O2(PO4)2 on glass was achieved by means of a (111)-textured Y2O3 buffer layer. STEM-EDX and XPS revealed that the composition of the obtained film is near-stoichiometric, thus indicating a suitable semiconducting material. The bandgap of the triclinic Sn5O2(PO4)2 film was estimated to be as large as 3.87 eV, which is the first experimental evidence verifying a recent theoretical prediction by Q. Xu et al., Chem. Mater., 2017, 29, 2459 quite closely.

Graphical abstract: Experimental evidence of wide bandgap in triclinic (001)-oriented Sn5O2(PO4)2 thin films on Y2O3 buffered glass substrates

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Article information

DOI
https://doi.org/10.1039/D0TC03213A
Article type
Paper
Submitted
07 Jul 2020
Accepted
23 Sep 2020
First published
24 Sep 2020

J. Mater. Chem. C, 2020,8, 14203-14207

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Experimental evidence of wide bandgap in triclinic (001)-oriented Sn5O2(PO4)2 thin films on Y2O3 buffered glass substrates

M. Fukumoto, C. Yang, W. Yu, C. Patzig, T. Höche, T. Ruf, R. Denecke, M. Lorenz and M. Grundmann, J. Mater. Chem. C, 2020, 8, 14203 DOI: 10.1039/D0TC03213A

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