Electron Beam Infrared Nano-Ellipsometry of Individual Indium Tin Oxide Nanocrystals
| Autor: | David J. Masiello, Jose J. Araujo, Daniel R. Gamelin, Jacob A. Busche, Arpan Maiti, Juan Carlos Idrobo, Jon P. Camden, Agust Olafsson |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Electron energy loss spectroscopy Physics::Optics chemistry.chemical_element Bioengineering General Chemistry Condensed Matter Physics Indium tin oxide Condensed Matter::Materials Science chemistry Ellipsometry Physics::Atomic and Molecular Clusters Optoelectronics General Materials Science Thin film Surface plasmon resonance Spectroscopy business Indium Plasmon |
| Zdroj: | Nano letters. 20(11) |
| ISSN: | 1530-6992 |
| Popis: | Leveraging recent advances in electron energy monochromation and aberration correction, we record the spatially resolved infrared plasmon spectrum of individual tin-doped indium oxide nanocrystals using electron energy-loss spectroscopy (EELS). Both surface and bulk plasmon responses are measured as a function of tin doping concentration from 1-10 atomic percent. These results are compared to theoretical models, which elucidate the spectral detuning of the same surface plasmon resonance feature when measured from aloof and penetrating probe geometries. We additionally demonstrate a unique approach to retrieving the fundamental dielectric parameters of individual semiconductor nanocrystals via EELS. This method, devoid from ensemble averaging, illustrates the potential for electron-beam ellipsometry measurements on materials that cannot be prepared in bulk form or as thin films. |
| Databáze: | OpenAIRE |
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