Surface Microstructure Machining for LED Light Extraction Efficiency Enhancement

Dong Yuan; Long Sheng Lu

doi:10.4028/www.scientific.net/KEM.589-590.537

Paper Titles

Simulation of Edge Chipping in Laser-Assisted Milling of Silicon Nitride Ceramics Using the XEFM
p.511

Study on Three-Way Pipe’s Internal High Pressure Forming Simulation
p.517

Rotary Ultrasonic Machining of Sapphire: Feasibility Study and Designed Experiments
p.523

Experimental Study on Rotary Ultrasonic Machining of SiCp/Al Composite
p.529

Surface Microstructure Machining for LED Light Extraction Efficiency Enhancement
p.537

Finite Element Study on Micro Cutting Process of Guide Abrasive Wear
p.543

Fabrication of Wave-Like Microstructure on the Bottom of Microflow Channel of Metallic Bipolar Plate
p.547

Research on Thermal Resistance of Micro Heat Pipe with Sintered Wick
p.552

Working Fluid Inventory Effect on Heat Transfer Performance of a Grooved Micro Heat Pipe
p.559

HomeKey Engineering MaterialsKey Engineering Materials Vols. 589-590Surface Microstructure Machining for LED Light...

Surface Microstructure Machining for LED Light Extraction Efficiency Enhancement

Abstract:

The external efficiency of LED is limited by total internal reflection on the interfacial surface. Surface structure modification is an effective way to solve this problem. In this work, micromachining method was present to manufacture surface microstructures for the GaN based LED light extraction efficiency enhancement. The feasibility of micromachining was discussed theoretically and proved by experimental study in this work. Micro-cutting and micro-forming approach was found be suitable for GaN surface microstructure machining. An experimental study of micro-cutting was carried out. The result shows that no crack and failure occurred during micro-cutting with 1μm cutting depth. This result demonstrated that microstructure can be machined on GaN based LED surface to enhance the LED light extraction efficiency.

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Advances in Machining and Manufacturing Technology XII

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Periodical:

Key Engineering Materials (Volumes 589-590)

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537-542

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.589-590.537

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Online since:

October 2013

Authors:

Dong Yuan, Long Sheng Lu

Keywords:

LED, Light Extraction Efficiency (LEE), Micromachining, Microstructure

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References

[1] P. Altieri, A. Jaeger, R. Windisch, N. Linder, P. Stauss, R. Oberschmid, and K. Streubel: J. Appl. Phys. Vol. 98 (2005), p.086101.

DOI: 10.1063/1.2085308

Google Scholar

[2] C. Huh, K.S. Lee, E.J. Kang, and S.J. Park: J. Appl. Phys. Vol. 93 (2003), pp.9383-9385.

Google Scholar

[3] J. J. Wierer, M. R. Krames, J. E. Epler, N. F. Gardner, M. G. Craford, J. R. Wendt and J. A. Simmons, and M. M. Sigalas: Appl. Phys. Lett. Vol. 84 (2004), pp.3885-3887.

DOI: 10.1063/1.1738934

Google Scholar

[4] T. Fujii, Y. Gao, R. Sharma, E. L. Hu, S. P. Danbaars, and S. Nakamura: Appl. Phys. Lett. Vol. 84(2004), pp.855-857.

Google Scholar

[5] D. S. Wuu, W. K. Wang, W. C. Shih, R. H. Horng, C. E. Lee, W. Y. Lin, and J. S. Fang: IEEE Photon. Technol. Lett. Vol. 17(2005), pp.288-290.

DOI: 10.1109/lpt.2004.839012

Google Scholar

[6] R. H. Horng, C. C. Yang, J. Y. Wu, S. H. Huang, C. E. Lee, and D. S. Wuu: Appl. Phys. Lett. Vol. 86 (2005), p.103505.

Google Scholar

[7] H. G. Hong, S. S. Kim, D. Y. Kim, T. Lee, J. O. Song, J. H. Cho, C. Sone, Y. Park, and T. -Y. Seong: Appl. Phys. Lett. Vol. 88 (2006), p.103505.

Google Scholar

[8] D. S. Leem, T. H. Lee, and T. Y. Seong: Solid-State Electron. Vol. 51 (2007), pp.793-796.

Google Scholar

[9] M. D. Drory, J. W. Ager, T. Suski, I. Grzegory, and S. Porowski: Appl. Phys. Lett. Vol. 69 (1996), pp.4044-4046.

DOI: 10.1063/1.117865

Google Scholar

[10] Q. H. Zheng, B. L. Liu, B. P. Zhang: Chin. J. Electron Device Vol. 31 (2008), pp.1077-1080.

Google Scholar