Hunting for monolayer boron nitride: optical and Raman signatures.
By R. Gorbachev, I. Riaz, R. Nair, R. Jalil, L. Britnell, B. Belle, Ernie W. Hill, K. Novoselov, Kenji Watanabe, Takashi Taniguchi and 2 more. Small, 2010
1,131 citations recorded by the source corpus.
We describe the identification of single- and few- layer boron nitride. Its optical contrast is much smaller than that of graphene but even monolayers are discernable by optimizing viewing conditions. Raman spectroscopy can be used to confirm BN monolayers. They exhibit an upshift in the fundamental Raman mode by up to 4 cm-1. The number of layers in thicker crystals can be counted by exploiting an integer-step increase in the Raman intensity and optical contrast.
Subfields: Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/fded3e733c7cd27394714dcdadf28377dc36ac81
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In Materials Chemistry
Citations in the corpus
- Strong oxidation resistance of atomically thin boron nitride nanosheets. (2014, methodology): “Supporting Information Additional AFM images of pristine BN nanosheets before heating treatment, AFM images of a monolayer BN after 800 °C heating in air for 2 h and AFM images of slightly oxidized bulk hBN.”
- Light-emitting diodes by band-structure engineering in van der Waals heterostructures. (2014, neutral): “0 -3. ηLens is the efficiency of the lens collection[3]. We use a 100x objective with a numerical aperture, NA = 0.55. The TMDC layer is effectively encapsulated within hBN of refractive index n = 2.2[4]. ßÅØáæ= 5 8 ì@î 6 4 ì @àOEJà _paqgl( ¿ Ù ) 4 = 5 6 H1− §1−@Ǻ á A 6 I=0.016 From this we can mak”