Interaction between a laser beam and semiconductor nanowires: application to the raman spectrum of Si nanowires

Anaya, J. and Torres, A. and Prieto, C. and Jiménez, J. and Rodríguez Domínguez, Andrés and Rodríguez Rodríguez, Tomás (2012). Interaction between a laser beam and semiconductor nanowires: application to the raman spectrum of Si nanowires. In: "11th International workshop on Beam Injection Assessment of Microstructures in Semiconductors", 25/06/2012 - 28/06/2012, Annaba, Argelia. pp. 1-8.

Description

Title: Interaction between a laser beam and semiconductor nanowires: application to the raman spectrum of Si nanowires
Author/s:
  • Anaya, J.
  • Torres, A.
  • Prieto, C.
  • Jiménez, J.
  • Rodríguez Domínguez, Andrés
  • Rodríguez Rodríguez, Tomás
Item Type: Presentation at Congress or Conference (Article)
Event Title: 11th International workshop on Beam Injection Assessment of Microstructures in Semiconductors
Event Dates: 25/06/2012 - 28/06/2012
Event Location: Annaba, Argelia
Title of Book: International workshop on Beam Injection Assessment of Microstructures in Semiconductors
Date: 2012
Subjects:
Freetext Keywords: Si, Nanowires, Raman spectroscopy, thermal conductivity, laser heating, phonons
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Tecnología Electrónica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

One presents in this work the study of the interaction between a focused laser beam and Si nanowires (NWs). The NWs heating induced by the laser beam is studied by solving the heat transfer equation by finite element methods (fem). This analysis permits to establish the temperature distribution inside the NW when it is excited by the laser beam. The overheating is dependent on the dimensions of the NW, both the diameter and the length. When performing optical characterization of the NWs using focused laser beams, one has to consider the temperature increase introduced by the laser beam. An important issue concerns the fact that the NWs diameter has subwavelength dimensions, and is also smaller than the focused laser beam. The analysis of the thermal behaviour of the NWs under the excitation with the laser beam permits the interpretation of the Raman spectra of Si NWs, where it is demonstrated that temperature induced by the laser beam play a major role in shaping the Raman spectrum of Si NWs

More information

Item ID: 20563
DC Identifier: http://oa.upm.es/20563/
OAI Identifier: oai:oa.upm.es:20563
Deposited by: Memoria Investigacion
Deposited on: 08 Oct 2013 16:23
Last Modified: 21 Apr 2016 23:24
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