Numerical simulations of light-extraction efficiencies of light-emitting diodes on micro and nanopatterned sapphire substrates

被引：8
|
作者：
Cui, Hao [1 ]
Park, Si-Hyun [1 ]
机构：
[1] Yeungnam Univ, Dept Elect Engn, Gyongsan 712749, South Korea
来源：
MICRO & NANO LETTERS | 2014年 / 9卷 / 12期
关键词：
2-DIMENSIONAL PHOTONIC CRYSTAL; LEDS; POWER; IMPROVEMENT; TEXTURE; DESIGN;
D O I：
10.1049/mnl.2014.0373
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Numerical simulations are performed to investigate the light-extraction efficiencies (LEEs) of gallium nitride-based light-emitting diodes (LEDs) on patterned sapphire substrates (PSSs), using the three-dimensional finite-difference time-domain method. PSSs with hexagonal arrays of cone-shaped patterns were used, and the pitch of the pattern array, pattern fill factor and pattern height were varied from nanoscale to microscale. The relative LEE for each PSS-LED was calculated, and the geometrical parameters were analysed for optimised light extraction enhancement of the PSS-LEDs.
引用
收藏
页码：841 / 844
页数：4
相关论文
共 50 条
  • [1] Light extraction efficiency analysis of GaN-based light-emitting diodes with nanopatterned sapphire substrates
    Pan, Jui-Wen
    Tsai, Pei-Jung
    Chang, Kao-Der
    Chang, Yung-Yuan
    APPLIED OPTICS, 2013, 52 (07) : 1358 - 1367
  • [2] Light-emitting diodes fabricated on nanopatterned sapphire substrates by thermal lithography
    Shinagawa, Taku
    Abe, Yuki
    Matsumoto, Hiroyuki
    Li, BoCheng
    Murakami, Kazuma
    Okada, Narihito
    Tadatomo, Kazuyuki
    Kannaka, Masato
    Fujii, Hideo
    PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 7, NO 7-8, 2010, 7 (7-8):
  • [3] Modeling light-extraction characteristics of packaged light-emitting diodes
    Ting, DZY
    McGill, TC
    VLSI DESIGN, 1998, 6 (1-4) : 363 - 366
  • [4] Optimizing light extraction efficiency in inclined sidewall type ultraviolet light-emitting diodes with nanopatterned sapphire substrates and photonic crystals
    Li, Biaomin
    Xia, Shihong
    Guo, Wei
    Yang, Zhenhai
    Zeng, Yuheng
    Yuan, Zhizhong
    Ye, Jichun
    OPTICAL AND QUANTUM ELECTRONICS, 2024, 56 (07)
  • [5] Effects of the refractive index of the encapsulant on the light-extraction efficiency of light-emitting diodes
    Ma, Ming
    Mont, Frank W.
    Yan, Xing
    Cho, Jaehee
    Schubert, E. Fred
    Kim, Gi Bum
    Sone, Cheolsoo
    OPTICS EXPRESS, 2011, 19 (19): : A1135 - A1140
  • [6] The aspect ratio effects on the performances of GaN-based light-emitting diodes with nanopatterned sapphire substrates
    Kao, Chien-Chih
    Su, Yan-Kuin
    Lin, Chuing-Liang
    Chen, Jian-Jhong
    APPLIED PHYSICS LETTERS, 2010, 97 (02)
  • [7] Numerical Simulations of the Light-Extraction Efficiency of LEDs on Sapphire Substrates Patterned with Various Polygonal Pyramids
    Cui, Hao
    Park, Si-Hyun
    JOURNAL OF THE OPTICAL SOCIETY OF KOREA, 2014, 18 (06) : 772 - 776
  • [8] Corrugated Sapphire Substrates for Organic Light-Emitting Diode Light Extraction
    Youn, Wooram
    Lee, Jinhyung
    Xu, Minfei
    Singh, Rajiv
    So, Franky
    ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (17) : 8974 - 8978
  • [9] Characteristics of InGaN/AlGaN light-emitting diodes on sapphire substrates
    J Appl Phys, 11 (5816):
  • [10] Characteristics of InGaN/AlGaN light-emitting diodes on sapphire substrates
    Egawa, T
    Jimbo, T
    Umeno, M
    JOURNAL OF APPLIED PHYSICS, 1997, 82 (11) : 5816 - 5821
12345