Giant photoluminescence emission in crystalline faceted Si grains (Articolo in rivista)

Type
Label
  • Giant photoluminescence emission in crystalline faceted Si grains (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1038/srep02674 (literal)
Alternative label
  • Giuseppe Faraci, Agata R. Pennisi, Alessandra Alberti, Rosa Ruggeri & Giovanni Mannino (2013)
    Giant photoluminescence emission in crystalline faceted Si grains
    in Scientific reports (Nature Publishing Group); Nature Publishing Group, London (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Giuseppe Faraci, Agata R. Pennisi, Alessandra Alberti, Rosa Ruggeri & Giovanni Mannino (literal)
Pagina inizio
  • 2674 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 3 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Fisica e Astronomia, Universita` di Catania, Via Santa Sofia 64, 95123 Catania, Italy Istituto per la Microelettronica ed i Microsistemi - Consiglio Nazionale delle Ricerche (CNR-IMM), VIII Strada nu5 Zona Industriale, 95121 Catania, Italy. (literal)
Titolo
  • Giant photoluminescence emission in crystalline faceted Si grains (literal)
Abstract
  • Empowering an indirect band-gap material like Si with optical functionalities, firstly light emission, represents a huge advancement constantly pursued in the realization of any integrated photonic device. We report the demonstration of giant photoluminescence (PL) emission by a newly synthesized material consisting of crystalline faceted Si grains (fg-Si), a hundred nanometer in size, assembled in a porous and columnar configuration, without any post processing. A laser beam with wavelength 632.8 nm locally produce such a high temperature, determined on layers of a given thickness by Raman spectra, to induce giant PL radiation emission. The optical gain reaches the highest value ever, 0.14 cm/W, representing an increase of 3 orders of magnitude with respect to comparable data recently obtained in nanocrystals. Giant emission has been obtained from fg-Si deposited either on glass or on flexible, low cost, polymeric substrate opening the possibility to fabricate new devices. (literal)
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