A Model for Calculating the Bidirectional Scattering Properties of Phosphor Layer in White Light-Emitting Diodes

被引：36

作者：

Hu, Run ^{[1
]}

Luo, Xiaobing ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430074, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2012年 / 30卷 / 21期

关键词：

Bidirectional scattering; light-emitting diodes (LEDs); phosphor conversion; PERFORMANCE; IMPACT;

D O I：

10.1109/JLT.2012.2218631

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this study, a model for calculating the bidirectional scattering properties of phosphor layer was established by considering the light absorption and light conversion of phosphor particle simultaneously. Based on the present model, the light extraction efficiency was calculated and validated by comparing with the existing experimental data and models. It is demonstrated that the present model predicts better. The transmission and reflection intensities of blue light and yellow light were found to be the functions of phosphor thickness. There exists a close critical phosphor thickness for reflected blue light and transmitted yellow light. The critical phosphor thickness is relative to the phosphor concentration.

引用

页码：3376 / 3380

页数：5

共 23 条

[1] Lattice relaxation study of the 4f-5d excitation of Ce3+-doped LaCl3, LaBr3, and NaLaF4:: Stokes shift by pseudo Jahn-Teller effect [J].

Andriessen, J. ;

van der Kolk, E. ;

Dorenbos, P. .

PHYSICAL REVIEW B, 2007, 76 (07)

[2]

Bera D., 2011, J PHOTON ENERGY, V1, P011025

[3] Electron-vibrational interaction in the 5d states of Ce3+ ions in halosulphate phosphors [J].

Brik, M. G. ;

Avram, N. M. .

MATERIALS CHEMISTRY AND PHYSICS, 2011, 128 (03) :326-330

[4] Optical constants study of YAG:Ce phosphor layer blended with SiO2 particles by Mie theory for white light-emitting diode package [J].

Run Hu ;

Xiaobing Luo ;

Huai Zheng ;

Sheng Liu .

Frontiers of Optoelectronics, 2012, 5 (2) :138-146

[5] Design of a novel freeform lens for LED uniform illumination and conformal phosphor coating [J].

Hu, Run ;

Luo, Xiaobing ;

Zheng, Huai ;

Qin, Zong ;

Gan, Zhiqiang ;

Wu, Bulong ;

Liu, Sheng .

OPTICS EXPRESS, 2012, 20 (13) :13727-13737

[6] Effect of phosphor settling on the optical performance of phosphor-converted white light-emitting diode [J].

Hu, Run ;

Luo, Xiaobing ;

Feng, Han ;

Liu, Sheng .

JOURNAL OF LUMINESCENCE, 2012, 132 (05) :1252-1256

[7] Study on the Optical Properties of Conformal Coating Light-Emitting Diode by Monte Carlo Simulation [J].

Hu, Run ;

Luo, Xiaobing ;

Liu, Sheng .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2011, 23 (22) :1673-1675

[8] Phosphor-converted LED modeling by bidirectional photometric data [J].

Hung, Chien-Hsiang ;

Tien, Chung-Hao .

OPTICS EXPRESS, 2010, 18 (19) :A261-A271

[9] A revised Kubelka-Munk theory for spectral simulation of phosphor-based white light-emitting diodes [J].

Ishida, Kunio ;

Mitsuishi, Iwao ;

Hattori, Yasushi ;

Nunoue, Shinya .

APPLIED PHYSICS LETTERS, 2008, 93 (24)

[10] On the origin of the redshift in the emission wavelength of InGaN/GaN blue light emitting diodes grown with a higher temperature interlayer [J].

Ju, Z. G. ;

Tan, S. T. ;

Zhang, Z-H ;

Ji, Y. ;

Kyaw, Z. ;

Dikme, Y. ;

Sun, X. W. ;

Demir, H. V. .

APPLIED PHYSICS LETTERS, 2012, 100 (12)

← 1 2 3 →