AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays

被引：16

作者：

Cheng, Wen-Ching ^{[1
]}

Huang, Shih-Yung ^{[2
]}

Chen, Yi-Jiun ^{[3
]}

Wang, Chia-Sheng ^{[3
]}

Lin, Hoang Yan ^{[3
]}

Wu, Tzong-Ming ^{[4
]}

Horng, Ray-Hua ^{[5
]}

机构：

[1] Natl Chung Hsing Univ, Grad Inst Precis Engn, Taichung 402, Taiwan

[2] Da Yeh Univ, Dept Ind Engn & Management, Changhua 515, Taiwan

[3] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Taipei 106, Taiwan

[4] Natl Chung Hsing Univ, Dept Mat Sci & Engn, Taichung 402, Taiwan

[5] Natl Chiao Tung Univ, Inst Elect, Hsinchu 300, Taiwan

来源：

SCIENTIFIC REPORTS | 2018年 / 8卷

关键词：

LIGHT-EMITTING-DIODES; EFFICIENCY; CONTACT; LAYER;

D O I：

10.1038/s41598-018-19405-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A hollow hemispherical polystyrene (HHPS) was fabricated to reduce total internal reflection in AlGaInP-based LEDs. At an injection current of 350 mA, the external quantum efficiencies of LED-I, LED-II, LED-III, and LED-IV are 20.92%, 24.65%, 27.28%, and 33.77% and the wall-plug efficiencies are 17.11%, 20%, 22.5%, and 27.33%, respectively. The enhanced performance is attributed to the light output power enhancement through the surface roughness, microlens-liked PS hemisphere, and scatter-liked HHPS array. In this paper, the rigorous coupled wave analysis (RCWA) numerical method was also conducted to demonstrate the HHPS array effectively enlarge the effective light cone.

引用

页数：7

共 24 条

[1] Enhanced light extraction efficiency from AlGaInP thin-film light-emitting diodes with photonic crystals [J].

Bergenek, K. ;

Wiesmann, Ch. ;

Wirth, R. ;

O'Faolain, L. ;

Linder, N. ;

Streubel, K. ;

Krauss, T. F. .

APPLIED PHYSICS LETTERS, 2008, 93 (04)

[2] Improved AlGaInP vertical emitting light-emitting diodes using direct printing [J].

Cho, Joong-Yeon ;

Byeon, Kyeong-Jae ;

Kim, Jin-Seung ;

Lee, Heon .

OPTICS LETTERS, 2013, 38 (09) :1573-1575

[3] Auger recombination rates in nitrides from first principles [J].

Delaney, Kris T. ;

Rinke, Patrick ;

Van de Walle, Chris G. .

APPLIED PHYSICS LETTERS, 2009, 94 (19)

[4] High-efficiency AlGaInP light-emitting diodes for solid-state lighting applications [J].

Gessmann, T ;

Schubert, EF .

JOURNAL OF APPLIED PHYSICS, 2004, 95 (05) :2203-2216

[5] Improved light extraction in AlGaInP-based LEDs using a roughened window layer [J].

Horng, Ray-Hua ;

Wu, Tzong-Ming ;

Wuu, Dong-Sing .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (10) :H710-H715

[6] Power-enhanced ITO omni-directional reflective AlGaInP LEDs by two-dimensional wavelike surface texturing [J].

Hsu, Shun-Cheng ;

Wuu, Dong-Sing ;

Zheng, Xinhe ;

Su, Juh-Yuh ;

Kuo, Ming-Feng ;

Han, Pin ;

Horng, Ray-Hua .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2008, 23 (10)

[7] Effect of GaN microlens array on efficiency of GaN-based blue-light-emitting diodes [J].

Kim, D ;

Lee, H ;

Cho, N ;

Sung, Y ;

Yeom, G .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2005, 44 (1-7) :L18-L20

[8] Device characteristics and thermal analysis of AlGaInP-based red monolithic light-emitting diode arrays [J].

Kim, Myung Sub ;

Lee, Hee Kwan ;

Yu, Jae Su .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2013, 28 (02)

[9] Metal mirror assisting light extraction from patterned AlGaInP light-emitting diodes [J].

Kim, Sun-Kyung ;

Song, Hyun Don ;

Ee, Ho-Seok ;

Choi, Hyun Min ;

Cho, Hyun Kyong ;

Lee, Yong-Hee ;

Park, Hong-Gyu .

APPLIED PHYSICS LETTERS, 2009, 94 (10)

[10]

Lee H. J., 2012, APPL PHYS EXPRESS, V5

← 1 2 3 →