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Titolo:
Improved blue luminescence in Ag-codoped SrS : Ce thin films made by atomic layer epitaxy and ion implantation
Autore:
Li, WM; Ritala, M; Leskela, M; Lappalainen, R; Soininen, E; Niinisto, L; Barthou, C; Benalloul, P; Benoit, J;
Indirizzi:
Univ Helsinki, Inorgan Chem Lab, FIN-00014 Helsinki, Finland Univ Helsinki Helsinki Finland FIN-00014 ab, FIN-00014 Helsinki, Finland Univ Helsinki, Accelerator Lab, FIN-00014 Helsinki, Finland Univ HelsinkiHelsinki Finland FIN-00014 ab, FIN-00014 Helsinki, Finland Planar Int Ltd, FIN-02201 Espoo, Finland Planar Int Ltd Espoo Finland FIN-02201 Int Ltd, FIN-02201 Espoo, Finland Helsinki Univ Technol, Inorgan & Analyt Chem Lab, FIN-02015 Espoo, FinlandHelsinki Univ Technol Espoo Finland FIN-02015 , FIN-02015 Espoo, Finland Univ Paris 06, Lab Opt Solides, CNRS, UMR 7601, F-75252 Paris, France UnivParis 06 Paris France F-75252 CNRS, UMR 7601, F-75252 Paris, France
Titolo Testata:
APPLIED PHYSICS LETTERS
fascicolo: 16, volume: 74, anno: 1999,
pagine: 2298 - 2300
SICI:
0003-6951(19990419)74:16<2298:IBLIAS>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOSPHORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Li, WM Univ Helsinki, Inorgan Chem Lab, FIN-00014 Helsinki, Finland Univ Helsinki Helsinki Finland FIN-00014 -00014 Helsinki, Finland
Citazione:
W.M. Li et al., "Improved blue luminescence in Ag-codoped SrS : Ce thin films made by atomic layer epitaxy and ion implantation", APPL PHYS L, 74(16), 1999, pp. 2298-2300

Abstract

Silver ions were implanted into SrS:Ce3+ thin films grown by atomic layer epitaxy (ALE) to examine the effects of Ag+ codoping on the luminescence ofSrS:Ce3+ used in thin-film electroluminescent (TFEL) devices. High-temperature annealing (800 degrees C) of the standard ALE SrS:Ce prepared at 510 degrees C caused a pronounced blueshift of the photoluminescence (PL) emission, but the intensity was decreased. Codoping by ion implantation of Ag+ and high-temperature annealing (800 degrees C) caused no further blueshift but the PL intensity was more than double that of the nonimplanted samples. The implanted SrS:Ce, Ag also exhibited the longest decay value (S-N = 22 nsat 520 nm with 420 nm excitation) reported for ALE SrS: Ce thin films. Theimproved PL properties show that codoping with Ag+ can be advantageous in ALE SrS:Ce3+ thin films used for electroluminescent multicolor and full-color flat panel displays. The results also suggest the potential of the ion implantation technique in TFEL device preparation. (C) 1999 American Institute of Physics. [S0003-6951(99)01716-7].

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Documento generato il 02/10/20 alle ore 01:32:49