Luminescent Properties of SrIn2O4:Sm3+ and Its Application in Light Emitting Diode
Abstract:A series of SrIn2-xO4:xSm3+ phosphors were synthesized by a high temperature solid-state method, and its luminescent properties were investigated. The SrIn2O4:Sm3+ phosphors, which could be excited by 410 nm radiation excitation, could create the red emission (607 nm) corresponding to the 4G5/2→6H7/2 typical transition of Sm3+. The emission intensity of Sm3+ in SrIn2O4, which was affected by adjusting the Sm3+ doping content, reached the maximum value when x = 0.1. The relevant critical transfer distance (R4) value of Sm3+ in SrIn2O4 is 1.2 nm, and the concentration quenching mechanism of Sm3+ in SrIn2O4 is the multipolar interaction. Moreover, its emission intensity could be also enhanced by codoping alkali metal ions A+ (A = Li, Na and K), and the Na+ ion was the optimal option. The SrIn2O4:Sm3+ was coated onto the 405 nm near-ultraviolet emitting InGaN chips to fabricate the red light emitting diodes.
Document Type: Research Article
Affiliations: Department of Electro-Optics, College of Science, Communication University of China, Beijing 100024, China
Publication date: 2013-06-01
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- 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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