本文以LED材料中的AlGaInP系列的紅光及琥珀光進行探討，設定主變因為底座溫度及驅動電流，被動變因為光強衰退率、光強衰退穩定性及變異度。並以底座溫度120℃長時間點亮，在Arrhenius model基礎下推估壽命關係。
本研究結果發現，底座溫升對光強衰退率、光強衰退穩定度及變異度皆增加;驅動電流增加對光強衰退率及變異度皆隨其而增，光強衰退穩定度隨其而減。光強衰退率及變異度紅光佳，穩定度琥珀光佳。
照度提升率隨驅動電流提升而減少，以700mA時照度提升率最高且和驅動電流的比例最大，效益最佳。
壽命部分以紅光表現較好，伴隨底座溫升及驅動電流增加下，紅光及琥珀光壽命差異將會越來越大。

In this thesis, LEDs are the lighting characteristics a series of AlGaInP materials for red and amber explored through the variation of the base temperature and driving current. The decay rate of light intensity, the lighting stability and variability are examined. By the base temperature of 120℃ a long time light power decay is used to estimate LED life via the Arrhenius model.
The results show that light intensity declining rate, its light stability and variability increase due to increasing in the base temperature; Increasing driving current also increases light intensity, but the and rate of light decay and its variability also increase. Intensity decay rate variability of red LEDs is better than that of amber LEDs.
Light luminance can be enhanced by increasing the driving current and drive current 700mA is the best one in this aspect.
Red LEDs have better life than that of amber LEDs. As the driving current increase, the difference in life between red and amber LEDs will be larger.

[1] R.Haitz,“Another Semiconductor Revolution: This Time It's Lighting! ”, Advances in Solid State Physics, Vol. 43, pp.67-81,2003.

[2] http://www.pida.org.tw/optolink/optolink-main.htm

[3] T. Whitaker, “LED market ready for accelerated growth in lighting, display backlights and automotive applications”, LEDs Magazine/Technology and Applications of Light Emitting Diodes, pp.5–8, 2007.

[4] http://www.teema.org.tw/epaper/20081112/industrial009.html

[5] E.M. Sa ,F.L.M. Antunes and A. J. Perin ,"Junction Temperature Estimation for High Power Light-Emitting Diode",IEEE Transactions on Instrumentation and Measurement,pp.3030-3035,2007.

[6] Thermal Management of White LEDs, U.S. Department of Energy, Energy Efficiency and Renewable Energy, February 2007.

[7] H. J. Round ,"A note on carborundum," Electrical World, Vol. 49,
p 309,February 1907.

[8] G. Destiau, "Recherches sur les scintillations des sulfures de zinc aux rayons "," Journal de Chemie Physique, pp.587-625 , 1936.

[9] N. Holonyak, Jr., and S. F. Bevacqua,“Coherent (visible) light emission from GaAsP junctions”, Appl. Phy. Lett, Vol. 1, pp. 82-83, Dec 1962.

[10] S. Nakamura ,T. Mukai and M. Senoh, “ Candela‐class high‐brightness InGaN/AlGaN double‐heterostructure blue light‐emitting diodes”,Appl.Phy .Lett,Vol.64,pp. 1687-1689,1994.

[11] E.F.Schubert,“Light-Emitting Diodes 2nd Edition”, Cambridge University Press,Cambridge,pp.59-85,2006.

[12] A. Zukauskas,M. S. Shur and R. Gaska. “Introduction to Solid-State
Lighting”pp.55-56,2002
.
[13] W. Nelson, “Analysis of Accelerated Life Test Data-Part I:The Arrhenius Model and Graphical Methods”,IEEE TRA-NSACTIONS ON ELECTRICAL INSULATION,Vol.EI-6,No.4,pp.165-181,1971.

[14] 陳榮裕, “底座溫度與驅動電流對高功率LED特性影響之研究”,
國立成功大學,工程科學系碩士論文,2008.

[15] G.E. Hofler,et al. “High-flux high-efficiency transparent substrate AlGaInP/GaP light-emitting diodes”,IEE,Electronic Letters,Vol.34,No.18,pp.1781-1782,1998.

[16] ASSIST, Led life for general lighting :definition of life,2005.

[17] G. Yimin, N. Nadarajah and F. J. Paul “White LED performance” Proceedings of SPIE 5530,p119-124,2004.

[18] N. Nadarajah and G. Yimin, “Life of LED-Based White Light Sources”, IEEE/OSA Journal of Display Technology, Vol. 1, No. 1,pp.161-171, 2005.

[19] J. D. G. LACEY,et al. “The reliability of (AlxGa1−x)0:5In0:5P visible light-emitting diodes”,Qual.Relib.Engng,Vol.16,pp.45-49,2000
[20] F. S. Tse and I. E. Morse, “Measurement and Instrumentation in Engineering”, Marcel Dekker, Inc, 1989.
[21] P. Nemeth, “Accelerated Life Time Test Methods for New Package Technologies”,IEEE,2001.