High temperature characterization of GaN-based photodetectors (Articolo in rivista)

Type
Label
  • High temperature characterization of GaN-based photodetectors (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.sna.2004.04.016 (literal)
Alternative label
  • De Vittorio M, Poti B, Todaro MT, Frassanito MC, Pomarico A, Passaseo A, Lomascolo M, Cingolani R (2004)
    High temperature characterization of GaN-based photodetectors
    in Sensors and actuators. A, Physical (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • De Vittorio M, Poti B, Todaro MT, Frassanito MC, Pomarico A, Passaseo A, Lomascolo M, Cingolani R (literal)
Pagina inizio
  • 329 (literal)
Pagina fine
  • 333 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 113 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Lecce, Natl Nanotechnol Lab, INFM, Dipartimento Ingn Innovaz, I-73100 Lecce, Italy; CNR, IMM, Ist Microelecttron & Microsistemi, Sez Lecce, I-73100 Lecce, Italy; ISUFI, Nanosci Dept, I-73100 Lecce, Italy (literal)
Titolo
  • High temperature characterization of GaN-based photodetectors (literal)
Abstract
  • In this work we report on the high temperature characterization of two different interdigitated metal-semiconductor-metal (MSM) GaN-based photodetectors. The active material of the two MSM devices consists of bulk GaN grown by metal organic chemical vapor deposition (MOCVD), and of an AlGaN/GaN heterostructure grown by molecular beam epitaxy/magnetron sputtering epitaxy (MBE/MSE) system. Some of the trapping mechanisms which are at the origin of the persistent photocurrent (PPC) effects in GaN-based devices have been studied. The analysis of the decay time as a function of the temperature shows that in both devices the GaN excitonic resonances provide the most important contribution to the PPC on the millisecond time scale at low temperature. The densities of the trap centers involved in the PPC were obtained in both samples by measuring the photocurrent as a function of optical power sweeped in the upward and downward direction. (literal)
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