Influence of Charge Compensation on Spectra Characteristics of SrCeO3:Sm3+ Phosphor
The red phosphors of SrCeO3:Sm3+,M+ (M = Li, Na, K) were synthesized by a sol−gel method. The X-ray diffraction patterns and photoluminescence spectra were determined to characterize their phase structural and luminescent properties. The effect
of charge compensation on the luminescence properties of sample SrCeO3:Sm3+ was investigated. The results show that there is no apparent phase structure transformation of the SrCeO3 matrix after doping appropriate amount of charge compensators. The excitation
spectra of the sample consisted of Ce4+→O2- charge transitions and Sm3+ ion excitation peak. Under an ultraviolet excitation with a wavelength of 408 nm, the sample emits a red luminescence due to the transition 4G5/2→6H7/2
of Sm3+, and the maximum emission peak is at 601 nm. The luminescence intensity firstly increased and then decreased with the increase of doping amount of charge compensators. However, the doping amount of charge compensator corresponding to the maximum emission intensity is different
with different charge compensators, and the optimum doping amount of charge compensators Li+, Na+ and K+ are 5%, 2% and 0.8%, respectively.
Keywords: charge compensator; phosphor; samarium-doped strontium cerate; spectra characteristics
Document Type: Research Article
Affiliations: State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
Publication date: 01 November 2012
- Journal of the Chinese Ceramic Society (JCCS), published in Chinese and in English, is a comprehensive monthly periodical focused on the fields of inorganic and non-metallic materials. The main purpose of the JCCS is to report the latest creative achievements in research, production and design for ceramics, glass, cementing materials, refractory, artificial crystals and other non-metallic materials. JCCS is regarded as an important journal in inorganic and non-metallic materials sciences in China and has been awarded by China Association for Science and Technology. The full-text of papers in JCCS is also published by CNKI (China National Knowledge Infrastructure). JCCS is indexed in EI Compendex, CA( Chemical Abstracts) ,SA and Ж and more than 20 databases.
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