Experimental evidence of wide bandgap in triclinic (001)-oriented SnO(PO) thin films on YO buffered glass substrates

Sn 5 O 2 (PO 4 ) 2 is a promising p-type transparent semiconducting oxide. Phase-pure triclinic Sn 5 O 2 (PO 4 ) 2 thin films were grown by pulsed laser deposition using a Sn 2 (P 2 O 7 ) target with higher phosphorus content. The (001)-oriented growth of triclinic Sn 5 O 2 (PO 4 ) 2 on glass was ac...

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Veröffentlicht in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2020-10, Vol.8 (4), p.1423-1427
Hauptverfasser: Fukumoto, Michitaka, Yang, Chang, Yu, Wenlei, Patzig, Christian, Höche, Thomas, Ruf, Thomas, Denecke, Reinhard, Lorenz, Michael, Grundmann, Marius
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Sprache:eng
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Zusammenfassung:Sn 5 O 2 (PO 4 ) 2 is a promising p-type transparent semiconducting oxide. Phase-pure triclinic Sn 5 O 2 (PO 4 ) 2 thin films were grown by pulsed laser deposition using a Sn 2 (P 2 O 7 ) target with higher phosphorus content. The (001)-oriented growth of triclinic Sn 5 O 2 (PO 4 ) 2 on glass was achieved by means of a (111)-textured Y 2 O 3 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 Sn 5 O 2 (PO 4 ) 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. Sn 5 O 2 (PO 4 ) 2 is a promising p-type transparent semiconducting oxide. The bandgap of the triclinic Sn 5 O 2 (PO 4 ) 2 film was estimated to be as large as 3.87 eV, which is the first experimental evidence verifying a recent theoretical prediction.
ISSN:2050-7526
2050-7534
DOI:10.1039/d0tc03213a