Effect of Nd3+ Doping on Structural, Near-Infrared, and Cathodoluminescent Properties for Cadmium Tantalate Phosphors

Lütfiye Feray Güleryüz

Makale detayları

Effect of Nd3+ Doping on Structural, Near-Infrared, and Cathodoluminescent Properties for Cadmium Tantalate Phosphors

Yazarlar:

Lütfiye Feray Güleryüz

Yayıncı:

Turkish Chemical Society

Ana Başlıklar:

Inorganic Chemistry

Dergi:

Journal of the Turkish Chemical Society Section A: Chemistry Vol.10 Issue 1, pp.77-88

Belge Tipi:

Makale

Yayın Tarihi:

2/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001281463

pISSN:

2149-0120

Anahtar kelimeler:

Özet:

 Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7, and 10 mol phosphor series were fabricated by conventional solid state method at 1100 C for 17 hours. The samples of cadmium tantalate were investigated by structural XRD, SEM and spectroscopic CL, PL analyses. In XRD results, the symmetry of CdTa2O6 phase with orthorhombic columbite structure was confirmed between 0.5 and 10 mol Nd3 doping concentrations. SEM analysis of the grains revealed round and shapeless morphology while grain sizes ranged from submicron to several microns. The emission spectra of Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7 and 10 mol phosphor series recorded with the transitions of 4F324I92 and 4F324I112. Among these transitions, the transition 4F324I92 at 889 nm has a high near-infrared emission intensity, which can be attributed to the laser potential of the phosphor. The NIR emission of the phosphor increased with increasing concentration of Nd3 up to 5 mol and then declined because of concentration quenching phenomenon. The CL emission peak at about 450 nm found in all samples is related to the intrinsic emission of the cadmium tantalate host. In addition, Nd3 doped phosphors exhibited the 4F324I92 transition of Nd3 and defect-related CL emissions at 670 nm. Decreasing crystallinity with increasing Nd3 concentration caused a decrease in host emission intensity at 450 nm.

 Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7, and 10 mol phosphor series were fabricated by conventional solid state method at 1100 C for 17 hours. The samples of cadmium tantalate were investigated by structural XRD, SEM and spectroscopic CL, PL analyses. In XRD results, the symmetry of CdTa2O6 phase with orthorhombic columbite structure was confirmed between 0.5 and 10 mol Nd3 doping concentrations. SEM analysis of the grains revealed round and shapeless morphology while grain sizes ranged from submicron to several microns. The emission spectra of Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7 and 10 mol phosphor series recorded with the transitions of 4F324I92 and 4F324I112. Among these transitions, the transition 4F324I92 at 889 nm has a high near-infrared emission intensity, which can be attributed to the laser potential of the phosphor. The NIR emission of the phosphor increased with increasing concentration of Nd3 up to 5 mol and then declined because of concentration quenching phenomenon. The CL emission peak at about 450 nm found in all samples is related to the intrinsic emission of the cadmium tantalate host. In addition, Nd3 doped phosphors exhibited the 4F324I92 transition of Nd3 and defect-related CL emissions at 670 nm. Decreasing crystallinity with increasing Nd3 concentration caused a decrease in host emission intensity at 450 nm.

 Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7, and 10 mol phosphor series were fabricated by conventional solid state method at 1100 C for 17 hours. The samples of cadmium tantalate were investigated by structural XRD, SEM and spectroscopic CL, PL analyses. In XRD results, the symmetry of CdTa2O6 phase with orthorhombic columbite structure was confirmed between 0.5 and 10 mol Nd3 doping concentrations. SEM analysis of the grains revealed round and shapeless morphology while grain sizes ranged from submicron to several microns. The emission spectra of Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7 and 10 mol phosphor series recorded with the transitions of 4F324I92 and 4F324I112. Among these transitions, the transition 4F324I92 at 889 nm has a high near-infrared emission intensity, which can be attributed to the laser potential of the phosphor. The NIR emission of the phosphor increased with increasing concentration of Nd3 up to 5 mol and then declined because of concentration quenching phenomenon. The CL emission peak at about 450 nm found in all samples is related to the intrinsic emission of the cadmium tantalate host. In addition, Nd3 doped phosphors exhibited the 4F324I92 transition of Nd3 and defect-related CL emissions at 670 nm. Decreasing crystallinity with increasing Nd3 concentration caused a decrease in host emission intensity at 450 nm.

 Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7, and 10 mol phosphor series were fabricated by conventional solid state method at 1100 C for 17 hours. The samples of cadmium tantalate were investigated by structural XRD, SEM and spectroscopic CL, PL analyses. In XRD results, the symmetry of CdTa2O6 phase with orthorhombic columbite structure was confirmed between 0.5 and 10 mol Nd3 doping concentrations. SEM analysis of the grains revealed round and shapeless morphology while grain sizes ranged from submicron to several microns. The emission spectra of Cd1-xTa2O6:xNd3 x0.5, 1.5, 3, 5, 7 and 10 mol phosphor series recorded with the transitions of 4F324I92 and 4F324I112. Among these transitions, the transition 4F324I92 at 889 nm has a high near-infrared emission intensity, which can be attributed to the laser potential of the phosphor. The NIR emission of the phosphor increased with increasing concentration of Nd3 up to 5 mol and then declined because of concentration quenching phenomenon. The CL emission peak at about 450 nm found in all samples is related to the intrinsic emission of the cadmium tantalate host. In addition, Nd3 doped phosphors exhibited the 4F324I92 transition of Nd3 and defect-related CL emissions at 670 nm. Decreasing crystallinity with increasing Nd3 concentration caused a decrease in host emission intensity at 450 nm.

Makale detayları

Effect of Nd3+ Doping on Structural, Near-Infrared, and Cathodoluminescent Properties for Cadmium Tantalate Phosphors

Yazarlar:

Lütfiye Feray Güleryüz

Yayıncı:

Turkish Chemical Society

Ana Başlıklar:

Inorganic Chemistry

Dergi:

Journal of the Turkish Chemical Society Section A: Chemistry Vol.10 Issue 1, pp.77-88

Belge Tipi:

Makale

Yayın Tarihi:

2/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001281463

pISSN:

2149-0120

CdTa2O6

Cathodoluminescence

Nd3+

Near infrared luminescence

Sayı

Makale detayları

Effect of Nd3+ Doping on Structural, Near-Infrared, and Cathodoluminescent Properties for Cadmium Tantalate Phosphors

Yazarlar: Lütfiye Feray Güleryüz

Yayıncı: Turkish Chemical Society

Ana Başlıklar: Inorganic Chemistry

Dergi: Journal of the Turkish Chemical Society Section A: Chemistry Vol.10 Issue 1, pp.77-88

Belge Tipi: Makale

Yayın Tarihi: 2/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001281463

pISSN: 2149-0120

CdTa2O6

Cathodoluminescence

Nd3+

Near infrared luminescence

Sayı

Yazarlar:

Lütfiye Feray Güleryüz

Yayıncı:

Turkish Chemical Society

Ana Başlıklar:

Inorganic Chemistry

Dergi:

Journal of the Turkish Chemical Society Section A: Chemistry Vol.10 Issue 1, pp.77-88

Belge Tipi:

Makale

Yayın Tarihi:

2/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001281463

pISSN:

2149-0120