A study on the luminescent properties of new green-emitting terbium-activated CaIn2O4:xTb phosphors

Kao, Feng Shih; Chen, Teng‐Ming

doi:10.1016/s0022-2313(01)00231-9

Cited by 57 publications

(17 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This decrease in brightness with increasing activator concentration also observed by Kao [1] in CaIn 2 O 4 :xTb prepared by solid-state process, it may be due to the well-established theory of concentration quenching [14]. However, Kao and Chen [2] have observed that CaIn 2 O 4 :xTb (x = 0.125%) is much brighter than (Y 2.95 Tb 0.05 )Al 5 O 12 under 254 nm UV excitation. The emission color of the aforementioned nanocrystals was investigated and compared using CIE chromaticity coordinates.…”

Section: Resultsmentioning

confidence: 80%

“…Trivalent terbium ions have been widely used as activators to obtain green phosphors, and showed excellent luminescent properties. Kao and Chen [1,2] successfully prepared SrIn 2 O 4 :xTb and CaIn 2 O 4 :xTb phosphors by solid-state reactions. In the past also, the luminescence properties of Tb 3+ in different host matrix have been extensively studied [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and luminescent properties of CaIn2O4:xTb nanocrystals

Khatkar

Han

Taxak

et al. 2006

Current Applied Physics

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Synthesis and luminescent properties of CaIn2O4:xTb nanocrystals

Khatkar

Han

Taxak

et al. 2006

Current Applied Physics

View full text Add to dashboard Cite

“…When the phosphors were excited by UV, the Tb 3+ ion (4f 8 ) would be raised to the higher 4f 7 5d 1 level and would feed afterward to the 5 D 3 or 5 D 4 excited states [9]. The excitation and emission spectra of the Y 3 Al 5 O 12 :Tb 3+ phosphors are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Solution combustion synthesis, structure and luminescence of Y3Al5O12:Tb3+ phosphors

Xia

Zhou

Zhang

et al. 2006

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…Rare earth doped materials have wide range of applications in lamp phosphors, image plate and neutron detection [5][6][7]. The luminescence from terbium doped phosphors was of great interest due to their strong green emission corresponding to the 5 days→ 7 F 5 [8]. We have recently studied the effect of introducing Ce 3+ and Tb 3+ in potassium iodide and some interesting results were obtained [4].…”

Section: Introductionmentioning

confidence: 99%

Luminescence Properties and Optical Absorption of X ray-Irradiated KBr: Ce3+, Tb3+ Crystals

Bangaru¹,

Saradha²,

Muralidharan

2015

J Fluoresc

View full text Add to dashboard Cite

This paper reports that KBr doubly doped with Tb(3+) and Ce(3+) were prepared by Bridgman-Stockbarger method and characterized by Optical absorption, Photoluminescence (PL), Thermoluminescence (TL), Photo stimulated emission (PSL) and TL emission, after X-ray irradiation have been observed. The optical absorption measurement indicates that F and Z3 centers are formed in the crystal during X-ray irradiation process. It was attempted to incorporate a broad band of Ce(3+) sensitizer into the narrow band emission of Tb(3+) in the KBr host without reduction of emission intensity. Co-doping of Ce(3+) ions in KBr:Tb(3+) crystal showed a broad band emission due to the d-f transition of Ce(3+) and a reduction in the intensity of emission peaks due to (5)days → (7)F6 transition of Tb(3+) when they were excited at 250 nm. These results supported that an effective energy transfer occurs from Ce(3+) to Tb(3+) in the KBr host. Co-doping Ce(3+) ions greatly intensified the excitation peak at 260 nm for the emission at 390 nm of Tb(3+) which means that more lattice defects, involved in the energy absorption and transfer to Tb(3+), are formed by the Ce(3+) co-doping. The integrated light intensity is two orders of magnitude higher as compared to the undoped samples for similar doses of irradiation and heating rate. Thermoluminescence process has been identified due to thermal mobilization of F-electrons and this causes peaks at 371 K and at 427 K, 457 K in KBr: Ce(3+), Tb(3+) crystals. The defects generated by irradiation were monitored by optical absorption and trap parameters for the TL process were calculated and presented.

show abstract

A study on the luminescent properties of new green-emitting terbium-activated CaIn2O4:xTb phosphors

Cited by 57 publications

References 17 publications

Synthesis and luminescent properties of CaIn2O4:xTb nanocrystals

Synthesis and luminescent properties of CaIn2O4:xTb nanocrystals

Solution combustion synthesis, structure and luminescence of Y3Al5O12:Tb3+ phosphors

Luminescence Properties and Optical Absorption of X ray-Irradiated KBr: Ce3+, Tb3+ Crystals

Contact Info

Product

Resources

About