Photoluminescence Properties of La1/3NbO3：Sm3+ Codoped with Sr2+, Ba2+ and Bi3+ Under Near-UV Excitation

doi:10.7503/cjcu20120844

Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (3): 509.doi: 10.7503/cjcu20120844

• Article: Inorganic Chemistry • Previous Articles Next Articles

Photoluminescence Properties of La_1/3NbO₃：Sm³⁺ Codoped with Sr²⁺, Ba²⁺ and Bi³⁺ Under Near-UV Excitation

DU Yan-Yan¹, HUANG Ke-Ke¹, ZHANG Jia-Qi¹, WANG Chu-Chu², CHU Xue-Feng¹, HOU Chang-Min¹, FENG Shou-Hua¹

1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China;
2. College of Life Science, Jilin University, Changchun 130012, China

Received:2012-09-14 Online:2013-03-10 Published:2013-02-18
Contact: Shou-Hua FENG E-mail:shfeng@mail.jlu.edu.cn

Abstract

Abstract:

La_1/3NbO₃:Sm³⁺ phosphor was synthesized by solid state reaction at high temperature and its photoluminescence properties were investigated. Its strongest excitation band is at 406 nm, ascribed to ⁶H_5/2→⁴K_11/2 transition of Sm³⁺ in the range of near-ultraviolet region(NUV, 365-410 nm). And its strongest emission peak is at 596 nm, attributed to ⁴G_5/2→⁶H_7/2 transition of Sm³⁺. As a result, La_1/3NbO₃:Sm³⁺ phosphor shows great potential for future application as alternative red-emitting NUV-based white LEDs. The luminescence intensity can be strongly enhanced by codoping cation in the La-site, namely Sr²⁺, Ba²⁺ and Bi³⁺. And the quantum yield is 5.4%, 7.5% and 5.3% for Sr²⁺, Ba²⁺ and Bi³⁺ codoped samples respectively with the optimum doping concentration.

Key words: Photoluminescence spectrum, White light emitting diode(LED), Solid-state lighting, Charge compensation agent, La_1/3NbO₃

CLC Number:

O611

TrendMD:

DU Yan-Yan, HUANG Ke-Ke, ZHANG Jia-Qi, WANG Chu-Chu, CHU Xue-Feng, HOU Chang-Min, FENG Shou-Hua. Photoluminescence Properties of La_1/3NbO₃：Sm³⁺ Codoped with Sr²⁺, Ba²⁺ and Bi³⁺ Under Near-UV Excitation[J]. Chem. J. Chinese Universities, 2013, 34(3): 509.

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Photoluminescence Properties of La_1/3NbO₃：Sm³⁺ Codoped with Sr²⁺, Ba²⁺ and Bi³⁺ Under Near-UV Excitation

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