Sol – gel synthesis of red - emitting phosphor Ca – Sr – Mo – W – O – (Eu 3 +, La3 +) powders and luminescence properties / Fa-Bin Cao in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3569-3574 Titre : Sol – gel synthesis of red - emitting phosphor Ca – Sr – Mo – W – O – (Eu 3 +, La3 +) powders and luminescence properties Type de document : texte imprimé Auteurs : Fa-Bin Cao, Auteur Année de publication : 2012 Article en page(s) : pp. 3569-3574 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Powder Résumé : The object of this study is to synthesize (Ca0.6,Sr0.16)(Mo0.4,W0.6):Eu3+0.08,La3+0.08 by sol―gel technology. The results show that the dominant emission peak of phosphor is 3D0 → 7F2 (616 nm). The International Commission on Illumination (CIE) chromaticity coordinates of the red-emitting phosphor are (0.67, 0.33), which is the NTSC system standard for red chromaticity. Because there are two regions in the excitation spectra of the phosphor, one is assigned from the charge transfer state (CTS) band at about 200―350 nm, and the other is from the intra-4f transitions from 350 to 600 nm. Hence, the phosphors could be strongly excited by near-UV and blue LEDs in solid state lighting technology. X-ray diffraction patterns indicated that red-phosphor powders present a tetragonal structure, I41/a[88](Z = 4) space group. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595782 [article] Sol – gel synthesis of red - emitting phosphor Ca – Sr – Mo – W – O – (Eu 3 +, La3 +) powders and luminescence properties [texte imprimé] / Fa-Bin Cao, Auteur . - 2012 . - pp. 3569-3574. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3569-3574 Mots-clés : Powder Résumé : The object of this study is to synthesize (Ca0.6,Sr0.16)(Mo0.4,W0.6):Eu3+0.08,La3+0.08 by sol―gel technology. The results show that the dominant emission peak of phosphor is 3D0 → 7F2 (616 nm). The International Commission on Illumination (CIE) chromaticity coordinates of the red-emitting phosphor are (0.67, 0.33), which is the NTSC system standard for red chromaticity. Because there are two regions in the excitation spectra of the phosphor, one is assigned from the charge transfer state (CTS) band at about 200―350 nm, and the other is from the intra-4f transitions from 350 to 600 nm. Hence, the phosphors could be strongly excited by near-UV and blue LEDs in solid state lighting technology. X-ray diffraction patterns indicated that red-phosphor powders present a tetragonal structure, I41/a[88](Z = 4) space group. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595782

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