تقرير
Fingerprints of the Strong Interaction between Monolayer MoS2 and Gold
| العنوان: | Fingerprints of the Strong Interaction between Monolayer MoS2 and Gold |
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| المؤلفون: | Velicky, Matej, Rodriguez, Alvaro, Bousa, Milan, Krayev, Andrey V., Vondracek, Martin, Honolka, Jan, Ahmadi, Mahdi, Donnelly, Gavin E., Huang, Fumin, Abruna, Hector D., Novoselov, Kostya S., Frank, Otakar |
| المصدر: | J Phys Chem Lett 11 (2020) 6112-6118 |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | Gold-mediated exfoliation of MoS2 has attracted considerable interest in the recent years. A strong interaction between MoS2 and Au facilitates preferential production of centimeter-sized monolayer MoS2 with near-unity yield and provides a heterostructure system noteworthy from a fundamental standpoint. However, little is known about the detailed nature of the MoS2-Au interaction and its evolution with the MoS2 thickness. Here, we identify specific vibrational and binding energy fingerprints of such strong interaction using Raman and X-ray photoelectron spectroscopy, which indicate substantial strain and charge-transfer in monolayer MoS2. Near-field tip-enhanced Raman spectroscopy reveals heterogeneity of the MoS2-Au interaction at the nanoscale, reflecting the spatial non-conformity between the two materials. Far-field micro-Raman spectroscopy shows that this interaction is strongly affected by the roughness and cleanliness of the underlying Au. Our results elucidate the nature of the strong MoS2-Au interaction and provide guidance for strain and charge doping engineering of MoS2. Comment: Main text: 23 pages, 4 figures. Supporting Information: 4 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1021/acs.jpclett.0c01287 |
| URL الوصول: | http://arxiv.org/abs/2004.07133 |
| رقم الأكسشن: | edsarx.2004.07133 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1021/acs.jpclett.0c01287 |
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