Probing the local nature of excitons and plasmons in few-layer MoS2

Probing excitons and plasmons at the nanoscale This paper outlines a template protocol to map the local nature of electronic excitations were they happen, at the nanoscale. An unprecedented combination of energy and spatial resolution (using monochromated low-loss scanning-transmission-electron-micr...

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Autores principales: Hannah Catherine Nerl, Kirsten Trøstrup Winther, Fredrik S. Hage, Kristian Sommer Thygesen, Lothar Houben, Claudia Backes, Jonathan N. Coleman, Quentin M. Ramasse, Valeria Nicolosi
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/6c3e5a8b588d4fbbb08a93c994ce9fdc
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Sumario:Probing excitons and plasmons at the nanoscale This paper outlines a template protocol to map the local nature of electronic excitations were they happen, at the nanoscale. An unprecedented combination of energy and spatial resolution (using monochromated low-loss scanning-transmission-electron-microscopy electron-energy-loss spectroscopy) was used to map for the first time local electronic excitations of 2D nanomaterials. These are crucially important to understand and explain any type of opto-electronic behaviour in 2D materials. Using this cutting-edge technique combined with a computational approach we were able to unravel the full set of electronic excitations (plasmonic and excitonic) in MoS2 nanosheets over a wide energy range. This study will be important for the application of nanomaterials for realistic applications in opto-electronics.