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Titolo:
Yttrium oxide upconverting phosphors. Part 2: Temperature dependent upconversion luminescence properties of erbium in yttrium oxide
Autore:
Silver, J; Martinez-Rubio, MI; Ireland, TG; Withnall, R;
Indirizzi:
Univ Greenwich, Ctr Phosphors & Display Mat Chem & Life Sci, London SE18 6PF, England Univ Greenwich London England SE18 6PF ife Sci, London SE18 6PF, England
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 30, volume: 105, anno: 2001,
pagine: 7200 - 7204
SICI:
1520-6106(20010802)105:30<7200:YOUPP2>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONVERSION; EMISSION; POWDERS; ER-3+; GLASS; IONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Silver, J Univ Greenwich, Ctr Phosphors & Display Mat Chem & Life Sci, London SE18 6PF, England Univ Greenwich London England SE18 6PF ondon SE18 6PF, England
Citazione:
J. Silver et al., "Yttrium oxide upconverting phosphors. Part 2: Temperature dependent upconversion luminescence properties of erbium in yttrium oxide", J PHYS CH B, 105(30), 2001, pp. 7200-7204

Abstract

Emission bands from Er3+ ions on C-2 and S-6 sites of cubic Y2O3 have beenobserved under 632.8 mn excitation. The well-known green hot band in the region of 520-540 nm and a new blue-green hot band in the region of 469-474 nm have been observed from Er3+ on both sites. These hot bands are assignedto the H-2(11/2) --> I-4(15/2) and the F-4(3/2) --> I-4(15/2) transitions,respectively. In addition to observing different thermal behavior for the emissions from Er3+ ions on different lattice sites due to these transitions, different thermal behavior has also been observed for the F-4(5/2) --> I-4(15/2), F-4(9/2) --> I-4(15/2), S-4(3/2) --> I-4(15/2), and S-4(11/2) -->I-4(15/2) transitions. The (4)G(11/2) --> I-4(15/2), H-2(9/2) --> I-4(15/2), and I-4(9/2) --> I-4(15/2) transitions gave rise to bands which were tooweak for accurate temperature-dependent studies. Emission arising from theF-4(7/2) --> I-4(15/2) transition was observed with 514.5 but not 632.8 nmexcitation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/06/18 alle ore 17:04:54