Far infrared photoconductivity in a silicon based material: Vanadium supersaturated silicon
| dc.contributor.author | Martil De La Plaza, Ignacio | |
| dc.contributor.author | García Hemme, Eric | |
| dc.contributor.author | García Hernansanz, Rodrigo | |
| dc.contributor.author | González Díaz, Germán | |
| dc.contributor.author | Olea Ariza, Javier | |
| dc.contributor.author | Prado Millán, Álvaro Del | |
| dc.date.accessioned | 2023-06-19T13:24:18Z | |
| dc.date.available | 2023-06-19T13:24:18Z | |
| dc.date.issued | 2013-07-15 | |
| dc.description | © 2013 AIP Publishing LLC. Authors would like to acknowledge the CAI de Técnicas Físicas of the Universidad Complutense de Madrid for the ion implantations and metallic evaporations, the Nanotechnology and Surface Analysis Services of the Universidad de Vigo C.A.C.T.I. for ToF-SIMS measurements and the Instituto de Nanociencia de Aragón for the TEM images. This work was partially supported by the Project NUMANCIA II (Grant No. S-2009/ENE/1477) funded by the Comunidad de Madrid. Research by E. García-Hemme was also supported by a PICATA predoctoral fellowship of the Moncloa Campus of International Excellence (UCM-UPM). J. Olea and D. Pastor thank Professor A. Martí and Professor A. Luque for useful discussions and guidance and acknowledge financial support from the MICINN within the program Juan de la Cierva (JCI-2011-10402 and JCI-2011-11471), under which this research was undertaken. | |
| dc.description.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. | |
| dc.description.department | Depto. de Estructura de la Materia, Física Térmica y Electrónica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | Comunidad de Madrid | |
| dc.description.sponsorship | MICINN | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/25750 | |
| dc.identifier.doi | 10.1063/1.4813823 | |
| dc.identifier.issn | 0003-6951 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1063/1.4813823 | |
| dc.identifier.relatedurl | http://scitation.aip.org | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/33562 | |
| dc.issue.number | 3 | |
| dc.journal.title | Applied physics Letters | |
| dc.language.iso | eng | |
| dc.publisher | Amer Inst Physics | |
| dc.relation.projectID | NUMANCIA II (S2009/ENE-1477) | |
| dc.relation.projectID | (JCI-2011-10402) | |
| dc.relation.projectID | (JCI-2011-11471) | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 537 | |
| dc.subject.keyword | Recombination | |
| dc.subject.keyword | Transition | |
| dc.subject.keyword | Noise | |
| dc.subject.keyword | Semiconductors | |
| dc.subject.keyword | Detectors | |
| dc.subject.keyword | Insulator | |
| dc.subject.keyword | Surfaces | |
| dc.subject.keyword | Capture | |
| dc.subject.keyword | GAP. | |
| dc.subject.ucm | Electricidad | |
| dc.subject.ucm | Electrónica (Física) | |
| dc.subject.unesco | 2202.03 Electricidad | |
| dc.title | Far infrared photoconductivity in a silicon based material: Vanadium supersaturated silicon | |
| dc.type | journal article | |
| dc.volume.number | 103 | |
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