http://www.cnr.it/ontology/cnr/individuo/prodotto/ID176193
Optical and Transport Properties of GaN/Al0.15Ga0.85N Quantum Wells (Articolo in rivista)
- Type
- Label
- Optical and Transport Properties of GaN/Al0.15Ga0.85N Quantum Wells (Articolo in rivista) (literal)
- Anno
- 2000-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1002/1521-396X(200003)178:1<73::AID-PSSA73>3.0.CO;2-A (literal)
- Alternative label
M. Lomascolo (a); G. Traetta (a); A. Passaseo (a); M. Longo (a);
D. Cannoletta (a); R. Cingolani (a); A. Bonfiglio (b); F. Della Sala (c);
A. Di Carlo (c); P. Lugli (c); M. Natali (d); S. K. Sinha (d); M. Berti (d);
A. V. Drigo (d); H. Botchkarev (e); and H. Morkoc (e) (2000)
Optical and Transport Properties of GaN/Al0.15Ga0.85N Quantum Wells
in Physica status solidi. A, Applied research
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- M. Lomascolo (a); G. Traetta (a); A. Passaseo (a); M. Longo (a);
D. Cannoletta (a); R. Cingolani (a); A. Bonfiglio (b); F. Della Sala (c);
A. Di Carlo (c); P. Lugli (c); M. Natali (d); S. K. Sinha (d); M. Berti (d);
A. V. Drigo (d); H. Botchkarev (e); and H. Morkoc (e) (literal)
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- ISI Web of Science (WOS) (literal)
- Scopu (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (a) INFM-Dipartimento di Ingegneria dell'Innovazione, UniversitaÁ di Lecce, Italy
(b) INFM-Dipartimento di Ingegneria Elettronica, UniversitaÁ di Cagliari, Italy
(c) INFM-Dipartimento di Ingegneria Elettronica, UniversitaÁ ªTor Vergataº, Roma, Italy
(d) INFM-Dipartimento di Fisica, UniversitaÁ di Padova, Italy
(e) Virginia Commonwealth University, Richmond, USA (literal)
- Titolo
- Optical and Transport Properties of GaN/Al0.15Ga0.85N Quantum Wells (literal)
- Abstract
- We have investigated the optical and phototransport properties of GaN/AlGaN quantum wells by
photoluminescence and photovoltage spectroscopy. We show that the internal piezoelectric and
spontaneous polarization fields cause a strong red-shift of the ground level energy of the quantum
wells. Furthermore, identical quantum wells grown on different buffer layers (GaN or AlGaN) exhibit
different emission energies, but similar well-width dependence of the n = 1 state, due to the
different distribution of strain between well and barrier. The built-in field also causes a strong
reduction of the exciton oscillator strength, which is not observable in photovoltage spectra. A
long-living (thousands of seconds) charge storage effect is observed in the phototransport spectra
due to the presence of point defects, presumably associated to Ga vacancies. (literal)
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