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Titolo:
Preparation and EPR characteristics of ZnGa2O4 : Mn phosphor
Autore:
Jung, HK; Park, DS; Park, YC;
Indirizzi:
Korea Res Inst Chem Technol, Taejon 305600, South Korea Korea Res Inst Chem Technol Taejon South Korea 305600 05600, South Korea Sung Kyun Kwan Univ, Dept Chem, Suwon 440746, South Korea Sung Kyun Kwan Univ Suwon South Korea 440746 , Suwon 440746, South Korea
Titolo Testata:
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
fascicolo: 12, volume: 19, anno: 1998,
pagine: 1320 - 1325
SICI:
0253-2964(199812)19:12<1320:PAECOZ>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTOLUMINESCENCE PROPERTIES; OXIDE; LUMINESCENCE; ZNO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Jung, HK Korea Res Inst Chem Technol, Taejon 305600, South Korea Korea ResInst Chem Technol Taejon South Korea 305600 uth Korea
Citazione:
H.K. Jung et al., "Preparation and EPR characteristics of ZnGa2O4 : Mn phosphor", B KOR CHEM, 19(12), 1998, pp. 1320-1325

Abstract

ZnGa2O4Mn phosphors were prepared by a new chemical process, and their photoluminescence and electron paramagnetic resonance characteristics were investigated. The chemical method showed a low temperature formation of phosphors and a rod-type shape of particles. The strong ultraviolet emission was observed in the undoped ZnGa2O4, phosphor, while strong green emission in the Mn2+-activated ZnGa2O4, phosphor. The green emission intensity of the phosphor prepared by the chemical method was much stronger than that preparedby the conventional method. This difference with preparation methods was interpreted as due to the difference in the distribution of Mn2+ in the hostlattice. From EPR results, it was explained that the line intensity of theundoped ZnGa2O4 is associated with the electrical conductivity of this material and the concentration quenching of green luminescence of ZnGa2O4:Mn at higher Mn2+ concentration is attributed to the coupling by exchange interaction between Mn2+ ions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 07:23:14