Crystal quality of two-dimensional gallium telluride and gallium selenide using Raman fingerprint

Autor: Jannatul Susoma, Jouko Lahtinen, Maria Kim, Juha Riikonen, Harri Lipsanen
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: AIP Advances, Vol 7, Iss 1, Pp 015014-015014-8 (2017)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/1.4973918
Popis: We have established Raman fingerprint of GaTe and GaSe to investigate their crystal quality. As unencapsulated, they both oxidise in ambient conditions which can be detected in their Raman analysis. X-ray photoelectron spectroscopy (XPS) analysis shows a good agreement with Raman analysis. 50-nm-thick Al2O3 encapsulation layer deposited by atomic layer deposition (ALD) inhibits degradation in ambient conditions.
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