Particle-swarm-optimization-assisted rate equation modeling of the two-peak emission behavior of non-stoichiometric CaAlxSi(7-3x)/4N3:Eu2+ phosphors

被引：49

作者：

Jung, Yoon Won ^{[1
]}

Lee, Bonghyun ^{[1
]}

Singh, Satendra Pal ^{[1
]}

Sohn, Kee-Sun ^{[1
]}

机构：

[1] Sunchon Natl Univ, World Class Univ Program, Dept Printed Elect, Chungnam 540742, South Korea

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 17期

关键词：

ENERGY-TRANSFER PROCESSES; EU-DOPED CAALSIN3; ORGANIZED MEDIA; LUMINESCENCE PROPERTIES; CRYSTAL MODEL; 5D-LEVEL ENERGIES; CE3+; NITRIDE; PHOTOLUMINESCENCE; ENVIRONMENT;

D O I：

10.1364/OE.18.017805

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We examined non-stoichiometric CaAlxSi(7-3x)/4N3:Eu2+ phosphors that were intentionally prepared with x = 0.7 similar to 1.3 to identify the origin of the deconvoluted Gaussian components that constitute the emission spectra of stoichiometric CaAlSiN3:Eu2+ phosphors. The Al/Si molar ratio around the Eu2+ activator caused the deconvoluted Gaussian peaks. The Eu2+ activator sites in Al-rich environments gave rise to the lower-energy emission peak, while those in Si-rich environments were related to the higher-energy emission peaks. Active energy transfer from the Eu2+ activator site in the Si-rich environment to the Eu2+ activator site in the Al-rich environment was confirmed. Particle swarm optimization was employed to estimate the nine unknown decision parameters that control the energy transfer process. All of the decision parameters were estimated within the range of reasonable values. (C) 2010 Optical Society of America

引用

页码：17805 / 17818

页数：14

共 33 条

[21] Time-resolved photoluminescence analysis of two-peak emission behavior in Sr2Si5N8:Eu2+ [J].

Sohn, Kee-Sun ;

Lee, Sangjun ;

Xie, Rong-Jun ;

Hirosaki, Naoto .

APPLIED PHYSICS LETTERS, 2009, 95 (12)

[22] Powder Synthesis of Y-α-SiAlON and Its Potential as a Phosphor Host [J].

Suehiro, Takayuki ;

Onuma, Hiroaki ;

Hirosaki, Naoto ;

Xie, Rong-Jun ;

Sato, Tsugio ;

Miyamoto, Akira .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (02) :1337-1342

[23] Host lattice materials in the system Ca3N2-AlN-Si3N4 for white light emitting diode [J].

Uheda, K. ;

Hirosaki, N. ;

Yamamoto, H. .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2006, 203 (11) :2712-2717

[24] Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes [J].

Uheda, K ;

Hirosaki, N ;

Yamamoto, Y ;

Naito, A ;

Nakajima, T ;

Yamamoto, H .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2006, 9 (04) :H22-H25

[25] Energy transfer processes in organized media .2. Generalization of the crystal model for dipole-dipole interactions in cubic sites [J].

Vasquez, SO .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (21) :8664-8671

[26] Energy-transfer processes in quasi-bidimensional crystal arrays -: art. no. 125103 [J].

Vásquez, SO .

PHYSICAL REVIEW B, 2001, 64 (12)

[27] Energy transfer processes in organized media .1. A crystal model for cubic sites [J].

Vasquez, SO .

JOURNAL OF CHEMICAL PHYSICS, 1996, 104 (19) :7652-7657

[28] Energy transfer processes in organized media.: III.: A two-center model for nonhomogeneous crystals [J].

Vásquez, SO .

JOURNAL OF CHEMICAL PHYSICS, 1998, 108 (02) :723-728

[29] Crystal model for energy-transfer processes in organized media:: Higher-order electric multipolar interactions [J].

Vásquez, SO .

PHYSICAL REVIEW B, 1999, 60 (12) :8575-8585

[30] Crystal structure and luminescence of Sr0.99Eu0.01AlSiN3 [J].

Watanabe, Hiromu ;

Yamane, Hisanori ;

Kijima, Naoto .

JOURNAL OF SOLID STATE CHEMISTRY, 2008, 181 (08) :1848-1852

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