Luminescence properties of sol–gel derived Sr2(Ce1−Sn )O4 blue phosphors

Hsu, Chao-Yung; Liaw, Chia-Lien; Lu, Chung‐Hsin

doi:10.1016/j.jallcom.2009.06.154

Cited by 12 publications

(11 citation statements)

References 23 publications

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“…However, when Sr 2 CeO 4 phosphors are used for UV-LEDs, they cannot produce strong emission. In order to improve illumination efficiency of Sr 2 CeO 4 , tin (IV) ions were used to replace cerium ions in the host in attempt to increase the excitation intensity in the UV range by Hsu et al [15].…”

Section: Introductionmentioning

confidence: 99%

Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

Wang

Zhou

et al. 2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

Wang

Zhou

et al. 2010

Journal of Alloys and Compounds

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“…The pure CuGaSe 2 thin films can be obtained via the solgel route when the selenization temperature was as low as 450°C. It is considered that the solgel route using polymerizing agents leads to the formation of tiny gel cage during polymerization . The immobilization of metal‐ion complexes in the tiny gel cage results in reducing segregation of metal ions.…”

Section: Resultsmentioning

confidence: 99%

“…A paste‐coating process using solgel‐derived precursors via nonhazardous selenization treatments was developed in this study. The compositional homogeneity and the reactivity of the precursors are expected to be enhanced via the solgel method . The influence of the Ga 3+ /Cu 2+ molar ratios on the formation CuGaSe 2 films and morphology was studied.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Copper Gallium Diselenide Thin Films from the Solgel‐Derived Precursors

Liu

Lin

2013

Int J Applied Ceramic Tech

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A simple process for preparing CuGaSe 2 (CGS) absorber layers was developed in this study. The solgel-derived Cu-Ga-O precursor paste with variable Ga 3+ /Cu 2+ ratios was coated on glass substrates using a doctor-blade technique. The precursor films were selenided with a selenium vapor at the temperature ranging from 250 to 550°C. The GIXRD patterns showed that single-phase CuGaSe 2 through the whole films was obtained at a Ga 3+ /Cu 2+ molar ratio of 1.5 on selenization at 450°C. The Raman measurements also indicated that the grown CuGaSe 2 thin films exhibited the chalcopyrite structure. The SEM images of the films reveal that with an increase in Ga/Cu ratio in the films, the amount of Cu 2 Se particles on the surface of the film was reduced. The resistivity of the films was increased with the increase in Ga content in the films. The formation mechanism of CuGaSe 2 thin films was proposed based on the XRD and Raman measurements of the films. The binary copper selenides are formed first, and then these phases lead to the formation of CuGaSe 2 .

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“…x Sn x O 4 (0 [ x C 0.07) as a blue phosphor [121]. In these materials the optical transitions are based on a ligand-to-metal charge transfer (CT) from O 2-to Ce 4?…”

Section: Blue Phosphors-other Hostsmentioning

confidence: 99%

Inorganic Phosphor Materials for Lighting

2016

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This chapter addresses the development of inorganic phosphor materials capable of converting the near UV or blue radiation emitted by a light emitting diode to visible radiation that can be suitably combined to yield white light. These materials are at the core of the new generation of solid-state lighting devices that are emerging as a crucial clean and energy saving technology. The chapter introduces the problem of white light generation using inorganic phosphors and the structureproperty relationships in the broad class of phosphor materials, normally containing lanthanide or transition metal ions as dopants. Radiative and non-radiative relaxation mechanisms are briefly described. Phosphors emitting light of different colors (yellow, blue, green, and red) are described and reviewed, classifying them in different chemical families of the host (silicates, phosphates, aluminates, borates, and non-oxide hosts). This research field has grown rapidly and is still growing, but the discovery of new phosphor materials with optimized properties (in terms of emission efficiency, chemical and thermal stability, color, purity, and cost of fabrication) would still be of the utmost importance.

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Luminescence properties of sol–gel derived Sr2(Ce1−Sn )O4 blue phosphors

Cited by 12 publications

References 23 publications

Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

Preparation and Characterization of Copper Gallium Diselenide Thin Films from the Solgel‐Derived Precursors

Inorganic Phosphor Materials for Lighting

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