Photoluminescent and paramagnetic centers in gamma irradiated porous silica

Simonpietro Agnello, Corpino, Carbonaro, Anedda

Risultato della ricerca: Articlepeer review

4 Citazioni (Scopus)

Abstract

he photolummescence and electron spin resonance properties of gamma irradiated (up to 500 kGy) porous silica are reported. By exciting at 5.6 eV a photoluminescence contribution can be detected before irradiation, peaked at about 4.1 eV. Gamma irradiation causes the generation of the E' centers (about 1 x 10(14) defects cm(-3)) of paramagnetic hole centers and modifies the photoluminescence properties of the sample: the emission amplitude decreases and three contributions can be singled out at about 3.3, 3.8 and 4.4 eV.
Lingua originaleEnglish
pagine (da-a)1784-1786
Numero di pagine3
RivistaJournal of Non-Crystalline Solids
Volume351
Stato di pubblicazionePublished - 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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