Far infrared photoconductivity in a silicon based material: vanadium supersaturated silicon

García Hemme, Eric and García Hernansanz, Rodrigo and Olea Ariza, Javier and Pastor Pastor, David and Prado Millán, Alvaro del and Mártil de la Plaza, Ignacio and González Díaz, Germán (2013). Far infrared photoconductivity in a silicon based material: vanadium supersaturated silicon. "Applied Physics Letters", v. 103 (n. 3); pp.. ISSN 0003-6951. https://doi.org/10.1063/1.4813823.

Description

Title: Far infrared photoconductivity in a silicon based material: vanadium supersaturated silicon
Author/s:
  • García Hemme, Eric
  • García Hernansanz, Rodrigo
  • Olea Ariza, Javier
  • Pastor Pastor, David
  • Prado Millán, Alvaro del
  • Mártil de la Plaza, Ignacio
  • González Díaz, Germán
Item Type: Article
Título de Revista/Publicación: Applied Physics Letters
Date: July 2013
ISSN: 0003-6951
Volume: 103
Subjects:
Faculty: Instituto de Energía Solar (IES) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We have analyzed the spectral sub-bandgap photoresponse of silicon (Si) samples implanted with vanadium (V) at different doses and subsequently processed by pulsed-laser melting. Samples with V concentration clearly above the insulator-metal transition limit show an important increase of the photoresponse with respect to a Si reference sample. Their photoresponse extends into the far infrared region and presents a sharp photoconductivity edge that moves towards lower photon energies as the temperature decreases. The increase of the value of the photoresponse is contrary to the classic understanding of recombination centers action and supports the predictions of the insulator-metal transition theory.

More information

Item ID: 28924
DC Identifier: http://oa.upm.es/28924/
OAI Identifier: oai:oa.upm.es:28924
DOI: 10.1063/1.4813823
Official URL: http://scitation.aip.org/content/aip/journal/apl/103/3/10.1063/1.4813823
Deposited by: Memoria Investigacion
Deposited on: 02 Jun 2014 19:11
Last Modified: 22 Sep 2014 11:43
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