A promising red-emitting phosphor for white light emitting diodes prepared by sol-gel method

Chongfeng Guo; Wei Zhang; Lin Luan; Tao Chen; Hong Cheng; Dexiu Huang

doi:10.1016/j.snb.2008.01.065

A promising red-emitting phosphor for white light emitting diodes prepared by sol-gel method

Chongfeng Guo^*, Wei Zhang, Lin Luan, Tao Chen, Hong Cheng, Dexiu Huang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

85 Citations (Scopus)

Abstract

Gd_2-xEu_x(MoO₄)₃ red phosphors were prepared by the sol-gel (SG) process. Differential thermal analysis (DTA), thermogravimetric (TG) analysis, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and photoluminescence (PL) spectra were used to characterize the resulting phosphors. The influence of the synthesis method on the luminescence properties was studied by comparing the optical performances of samples by sol-gel processing and solid-state reaction (SR). On the basis of X-ray powder diffraction, SEM micrograph and photoluminescence measurements, SG appeared to be the most efficient method to prepare high-quality compounds for practical applications. In addition, the effects of annealing temperature, time and Eu³⁺ doping concentration on the PL intensities were also investigated in detail.

Original language	English
Pages (from-to)	33-39
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	133
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2008.01.065
Publication status	Published - 28 Jul 2008

Keywords

Photoluminescence
Red phosphors
Sol-gel method and light emitting diodes

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10.1016/j.snb.2008.01.065

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title = "A promising red-emitting phosphor for white light emitting diodes prepared by sol-gel method",

abstract = "Gd2-xEux(MoO4)3 red phosphors were prepared by the sol-gel (SG) process. Differential thermal analysis (DTA), thermogravimetric (TG) analysis, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and photoluminescence (PL) spectra were used to characterize the resulting phosphors. The influence of the synthesis method on the luminescence properties was studied by comparing the optical performances of samples by sol-gel processing and solid-state reaction (SR). On the basis of X-ray powder diffraction, SEM micrograph and photoluminescence measurements, SG appeared to be the most efficient method to prepare high-quality compounds for practical applications. In addition, the effects of annealing temperature, time and Eu3+ doping concentration on the PL intensities were also investigated in detail.",

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author = "Chongfeng Guo and Wei Zhang and Lin Luan and Tao Chen and Hong Cheng and Dexiu Huang",

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T1 - A promising red-emitting phosphor for white light emitting diodes prepared by sol-gel method

AU - Guo, Chongfeng

AU - Zhang, Wei

AU - Luan, Lin

AU - Chen, Tao

AU - Cheng, Hong

AU - Huang, Dexiu

PY - 2008/7/28

Y1 - 2008/7/28

N2 - Gd2-xEux(MoO4)3 red phosphors were prepared by the sol-gel (SG) process. Differential thermal analysis (DTA), thermogravimetric (TG) analysis, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and photoluminescence (PL) spectra were used to characterize the resulting phosphors. The influence of the synthesis method on the luminescence properties was studied by comparing the optical performances of samples by sol-gel processing and solid-state reaction (SR). On the basis of X-ray powder diffraction, SEM micrograph and photoluminescence measurements, SG appeared to be the most efficient method to prepare high-quality compounds for practical applications. In addition, the effects of annealing temperature, time and Eu3+ doping concentration on the PL intensities were also investigated in detail.

AB - Gd2-xEux(MoO4)3 red phosphors were prepared by the sol-gel (SG) process. Differential thermal analysis (DTA), thermogravimetric (TG) analysis, X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and photoluminescence (PL) spectra were used to characterize the resulting phosphors. The influence of the synthesis method on the luminescence properties was studied by comparing the optical performances of samples by sol-gel processing and solid-state reaction (SR). On the basis of X-ray powder diffraction, SEM micrograph and photoluminescence measurements, SG appeared to be the most efficient method to prepare high-quality compounds for practical applications. In addition, the effects of annealing temperature, time and Eu3+ doping concentration on the PL intensities were also investigated in detail.

KW - Photoluminescence

KW - Red phosphors

KW - Sol-gel method and light emitting diodes

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JO - Sensors and Actuators, B: Chemical

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SN - 0925-4005

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A promising red-emitting phosphor for white light emitting diodes prepared by sol-gel method

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Keywords

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