Properties of nanocrystalline silicon probed by optomechanics
[EN] Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimize their functionality for devices and applications. Here, we report on the optical, mechanical and thermal properties of n...
| Autores: | ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/194501 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/194501 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Annealing Cavity optomechanics Nanocrystalline silicon TEORÍA DE LA SEÑAL Y COMUNICACIONES |
| _version_ | 1878730552003002368 |
|---|---|
| author | Navarro-Urrios, Daniel |
| author2 | Colombano, Martín F. Maire, Jeremie Chávez-Ángel, Emigdio Arregui, Guillermo Capuj, Néstor E. Devos, Arnaud Grigoras, Kestutis Häkkinen, Teija Saarilahti, Jaakko Makkonen, Tapani Sotomayor-Torres, Clivia M. Ahopelto, Jouni Griol Barres, Amadeu Bellieres, Laurent Christophe Martínez, Alejandro|||0000-0001-5448-0140 |
| author2_role | author author author author author author author author author author author author author author author |
| author_browse | Ahopelto, Jouni Arregui, Guillermo Bellieres, Laurent Christophe Capuj, Néstor E. Chávez-Ángel, Emigdio Colombano, Martín F. Devos, Arnaud Grigoras, Kestutis Griol Barres, Amadeu Häkkinen, Teija Maire, Jeremie Makkonen, Tapani Martínez, Alejandro|||0000-0001-5448-0140 Navarro-Urrios, Daniel Saarilahti, Jaakko Sotomayor-Torres, Clivia M. |
| author_facet | Navarro-Urrios, Daniel Colombano, Martín F. Maire, Jeremie Chávez-Ángel, Emigdio Arregui, Guillermo Capuj, Néstor E. Devos, Arnaud Grigoras, Kestutis Häkkinen, Teija Saarilahti, Jaakko Makkonen, Tapani Sotomayor-Torres, Clivia M. Ahopelto, Jouni Griol Barres, Amadeu Bellieres, Laurent Christophe Martínez, Alejandro|||0000-0001-5448-0140 |
| author_role | author |
| collection | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| description | [EN] Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimize their functionality for devices and applications. Here, we report on the optical, mechanical and thermal properties of nanocrystalline silicon probed by means of optomechanical nanobeams to extract information of the dynamics of optical absorption, mechanical losses, heat generation and dissipation. The optomechanical nanobeams are fabricated using nanocrystalline films prepared by annealing amorphous silicon layers at different temperatures. The resulting crystallite sizes and the stress in the films can be controlled by the annealing temperature and time and, consequently, the properties of the films can be tuned relatively freely, as demonstrated here by means of electron microscopy and Raman scattering. We show that the nanocrystallite size and the volume fraction of the grain boundaries play a key role in the dissipation rates through nonlinear optical and thermal processes. Promising optical (13,000) and mechanical (1700) quality factors were found in the optomechanical cavity realized in the nanocrystalline Si resulting from annealing at 950 degrees C. The enhanced absorption and recombination rates via the intragap states and the reduced thermal conductivity boost the potential to exploit these nonlinear effects in applications including Nanoelectromechanical systems (NEMS), phonon lasing and chaos-based devices. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_1e9de1f4f9b164253adee1623e8d7cba |
| institution | Universitat Politècnica de València (UPV) |
| instname_str | Universitat Politècnica de València (UPV) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:riunet.upv.es:10251/194501 |
| publishDate | 2020 |
| publishDateSort | 2020 |
| publisher | Walter de Gruyter GmbH |
| publisherStr | Walter de Gruyter GmbH |
| reponame_str | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| spelling | Properties of nanocrystalline silicon probed by optomechanics Navarro-Urrios, Daniel Colombano, Martín F. Maire, Jeremie Chávez-Ángel, Emigdio Arregui, Guillermo Capuj, Néstor E. Devos, Arnaud Grigoras, Kestutis Häkkinen, Teija Saarilahti, Jaakko Makkonen, Tapani Sotomayor-Torres, Clivia M. Ahopelto, Jouni Griol Barres, Amadeu Bellieres, Laurent Christophe Martínez, Alejandro|||0000-0001-5448-0140 Annealing Cavity optomechanics Nanocrystalline silicon TEORÍA DE LA SEÑAL Y COMUNICACIONES [EN] Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimize their functionality for devices and applications. Here, we report on the optical, mechanical and thermal properties of nanocrystalline silicon probed by means of optomechanical nanobeams to extract information of the dynamics of optical absorption, mechanical losses, heat generation and dissipation. The optomechanical nanobeams are fabricated using nanocrystalline films prepared by annealing amorphous silicon layers at different temperatures. The resulting crystallite sizes and the stress in the films can be controlled by the annealing temperature and time and, consequently, the properties of the films can be tuned relatively freely, as demonstrated here by means of electron microscopy and Raman scattering. We show that the nanocrystallite size and the volume fraction of the grain boundaries play a key role in the dissipation rates through nonlinear optical and thermal processes. Promising optical (13,000) and mechanical (1700) quality factors were found in the optomechanical cavity realized in the nanocrystalline Si resulting from annealing at 950 degrees C. The enhanced absorption and recombination rates via the intragap states and the reduced thermal conductivity boost the potential to exploit these nonlinear effects in applications including Nanoelectromechanical systems (NEMS), phonon lasing and chaos-based devices. The following support is gratefully acknowledged: the European Commission project PHENOMEN (H2020-EU-FET Open GA no. 713450), the Spanish Severo Ochoa Excellence program (SEV-2017-0706), CMST and ECA: the Spanish MICINN project SIP (PGC2018-101743-B-I00), DNU and AM: the Spanish MICINN project PGC2018-094490-B-C22. DNU holds a Ramon y Cajal postdoctoral fellowship (RYC-2014-15392); MFC and GA hold a S. Ochoa and a M. S. Curie COFUND BIST postgraduate studentship, respectively. Walter de Gruyter GmbH https://riunet.upv.es/handle/10251/194501 |
| spellingShingle | Properties of nanocrystalline silicon probed by optomechanics Navarro-Urrios, Daniel Annealing Cavity optomechanics Nanocrystalline silicon TEORÍA DE LA SEÑAL Y COMUNICACIONES |
| title | Properties of nanocrystalline silicon probed by optomechanics |
| title_full | Properties of nanocrystalline silicon probed by optomechanics |
| title_fullStr | Properties of nanocrystalline silicon probed by optomechanics |
| title_full_unstemmed | Properties of nanocrystalline silicon probed by optomechanics |
| title_short | Properties of nanocrystalline silicon probed by optomechanics |
| title_sort | Properties of nanocrystalline silicon probed by optomechanics |
| topic | Annealing Cavity optomechanics Nanocrystalline silicon TEORÍA DE LA SEÑAL Y COMUNICACIONES |
| topic_facet | Annealing Cavity optomechanics Nanocrystalline silicon TEORÍA DE LA SEÑAL Y COMUNICACIONES |
| url | https://riunet.upv.es/handle/10251/194501 |