Air tightness of hBN encapsulation and its impact on Raman spectroscopy of van der Waals materials

URN to cite this document:: urn:nbn:de:bvb:355-epub-416836

Holler, Johannes ; Lorenz, Bauriedl ; Korn, Tobias

; Seitz, Andrea ; Özyigit, Furkan ; Eichinger, Michaela ; Schüller, Christian ; Watanabe, Kenji ; Taniguchi, Takashi ; Strunk, Christoph

; Paradiso, Nicola

License: Creative Commons Attribution 3.0
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Date of publication of this fulltext: 26 Feb 2020 09:36

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Item type:	Article
Journal or Publication Title:	2D Materials
Publisher:	IOP
Volume:	7
Number of Issue or Book Chapter:	1
Page Range:	015012
Date:	8 November 2019
Institutions:	Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk
Projects:	DFG SFB 1277, KO 3612/3-1
Keywords:	Raman spectroscopy, sensitive 2D materials, photo-oxidation, hBN encapsulation, niobium diselenide
Dewey Decimal Classification:	500 Science > 530 Physics
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	41683

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Abstract

Raman spectroscopy is a precious tool for the characterization of van der Waals materials, e.g. for the determination of the layer number in thin exfoliated flakes. For sensitive materials, however, this method can be dramatically invasive. In particular, the light intensity required to obtain a significant Raman signal is sufficient to immediately photo-oxidize few-layer thick metallic van der ...

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