http://www.cnr.it/ontology/cnr/individuo/prodotto/ID35202
Excitation and de-excitation properties of silicon quantum dots under electrical pumping (Articolo in rivista)
- Type
- Label
- Excitation and de-excitation properties of silicon quantum dots under electrical pumping (Articolo in rivista) (literal)
- Anno
- 2002-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.1505117 (literal)
- Alternative label
A. Irrera, D. Pacifici, M. Miritello, G. Franzò, F. Priolo, F. Iacona, D. Sanfilippo, G. Di Stefano, and P.G. Fallica (2002)
Excitation and de-excitation properties of silicon quantum dots under electrical pumping
in Applied physics letters
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- A. Irrera, D. Pacifici, M. Miritello, G. Franzò, F. Priolo, F. Iacona, D. Sanfilippo, G. Di Stefano, and P.G. Fallica (literal)
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- Pagina fine
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- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Catania, INFM, Corso Italia 57, I-95129 Catania, Italy.
Univ Catania, Dipartimento Fis & Astron, I-95129 Catania, Italy
CNR, IMM, Sez Catania, I-95121 Catania, Italy
ST Microelect, I-95121 Catania, Italy (literal)
- Titolo
- Excitation and de-excitation properties of silicon quantum dots under electrical pumping (literal)
- Abstract
- In this work, the stationary and time-resolved electroluminescence (EL)
properties of Si quantum dots embedded within a metal-oxide-semiconductor
device are investigated. In particular, we measured the excitation cross
section of Si nanocrystals under electrical pumping, finding a value of
4.7E-14 cm2 which is two orders of magnitude higher with respect to the
excitation cross section under 488 nm optical pumping. We also studied the
radiative and nonradiative decay processes occurring in these devices by
measuring the time evolution of the EL signal. We demonstrate that the
mechanism responsible for the emission is the same under both electrical
and optical pumping. The overall quantum efficiency of the electrical
pumping is estimated to be two orders of magnitude higher than the quantum
efficiency for optical pumping in all the studied temperature ranges. (literal)
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