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Meng, Qi; Lin, Jun; Fu, Lianshe; Zhang, Hongjie; Wang, Shubin; Zhou, Yonghui

doi:10.1039/b105963g

Cited by 47 publications

(16 citation statements)

References 26 publications

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“…That is, with increasing Eu 3+ concentration, the proportion of nonradiative energy transfer between nearby Eu 3+ ions would increase, when the concentration of Eu 3+ ions exceeds the critical value, the luminescence begins to quench. This quenching concentration of Eu 3+ ions in BEuT thin films is relatively high compared with other Eu 3+ doped thin film materials reported to exhibit quenching effect [27]. This unusual concentration quenching effect of photoluminescence could also be observed in some Eu 3+ -ion-activated layered perovskite luminescent powder materials [28].…”

Section: Resultsmentioning

confidence: 86%

Optical characteristics of Bi4-xEuxTi3O12 ferroelectric thin films on fused silica substrates

Ruan

Zhou

et al. 2012

J Electroceram

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Bi 4-x Eu x Ti 3 O 12 (BEuT) ferroelectric thin films were prepared on fused silica substrates by using chemical solution deposition technique. The attained samples had a polycrystalline bismuth-layered perovskite structure, and their optical properties were composition dependent. The thin film samples had good optical transmittance above 500 nm wavelength. A blue shift of the optical absorption edge was observed in the BEuT thin films with increasing Eu 3+ concentration. The optical band gaps of BEuT thin films were estimated to be about 3.57, 3.60, 3.61, 3.63, and 3.69 eV for the samples with x00.25, 0.40, 0.55, 0.70, and 0.85, respectively. Photoluminescence measurements showed that two emission peaks of BEuT thin films originated from two transitions of 5 D 0 → 7 F 1 (594 nm) and 5 D 0 → 7 F 2 (617 nm) had maximum intensities when Eu 3+ concentration was x00.40. The relatively high quenching concentration of Eu 3+ content was thought to be related to the layered structure of BEuT thin films. These results suggested that multifunctional BEuT thin film materials could have promising applications in optoelectronic devices.

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Section: Resultsmentioning

confidence: 86%

Optical characteristics of Bi4-xEuxTi3O12 ferroelectric thin films on fused silica substrates

Ruan

Zhou

et al. 2012

J Electroceram

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“…4(a). The excitation spectrum consists of a charge transfer band (CTB) of Eu 3+ -O 2− band in the short ultraviolet region (256 nm) [16]. The main factor affecting the intensity of the charge transfer band is the efficiency of the energy process from the CTB to the Eu 3+ emitting level.…”

Section: Resultsmentioning

confidence: 99%

Photoluminescence and thermoluminescence studies of Mg2SiO4:Eu3+ nano phosphor

Prashantha

Lakshminarasappa

Nagabhushana

2011

Journal of Alloys and Compounds

118

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Phosphor Photoluminescence Thermoluminescence Optical absorption a b s t r a c t Nanoparticles of Eu 3+ doped Mg 2 SiO 4 are prepared using low temperature solution combustion technique with metal nitrate as precursor and urea as fuel. The synthesized samples are calcined at 800• C for 3 h. The Powder X-ray diffraction (PXRD) patterns of the sample reveled orthorhombic structure with ␣-phase. The crystallite size using Scherer's formula is found to be in the range 50-60 nm. • C and 345• C besides a shoulder with peak at ∼240• C are observed. The trapping parameters-activation energy (E), order of kinetics (b) and frequency factor (s) are calculated using glow curve shape method and the results obtained are discussed.

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“…Sol-gel technology has other certain attractive features such as the ease of forming films of controllable thickness, the protective environment formed around the particles which can prevent crystal growth and aggregation, the possibility of using high purity starting materials and coating films on substrates with complex shapes. Another merit of Sol-Gel chemistry is the possibility to impregnate or "dope" many chemical species into the pores of the formed gel by adding them to the sol [88], [89].…”

Section: Results Of Chemical Analysismentioning

confidence: 99%

Novel Binary Calcia–Alumina Systems for Device Applications

Zahedi¹

2009

sci adv mat

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Untitled

Cited by 47 publications

References 26 publications

Optical characteristics of Bi4-xEuxTi3O12 ferroelectric thin films on fused silica substrates

Optical characteristics of Bi4-xEuxTi3O12 ferroelectric thin films on fused silica substrates

Photoluminescence and thermoluminescence studies of Mg2SiO4:Eu3+ nano phosphor

Novel Binary Calcia–Alumina Systems for Device Applications

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