Study of Light Extraction Efficiency for Thin-film-flip-chip Light-emitting Diodes with Periodic Spheroids

Authors

Xiaojie Yu, School of Information Science and Engineering, Shandong University, Jinan 250100, China;
Li Kang, School of Information Science and Engineering, Shandong University, Jinan 250100, China;
Fanmin Kong, School of Information Science and Engineering, Shandong University, Jinan 250100, China;
Qingyang Yue, School of Information Science and Engineering, Shandong University, Jinan 250100, China;

Abstract

Abstract: The enhancement of light extraction efficiency for thin-film-flip-chip light-emitting diodes (LED) based gallium nitride (GaN) with triangular lattice periodic ellipsoid was studied. Three dimensional finite difference time domain methods (3D-FDTD) were applied to analyze the structural parameters (the period and ellipsoid height) effects on thin-film-flip-chip LED light extraction efficiency. FDTD numerical results prove that ellipsoids structure can improve LED light extraction efficiency and impair guide mode. Method rigorous coupled wave (RCWA) is adopted to analyze diffraction characteristics. This research results show that optimization of the periodic ellipsoid can improve thin-film-flip-chip LED light extraction efficiency increased by 2.8 times.

Recommended Citation

Yu, Xiaojie; Kang, Li; Kong, Fanmin; and Yue, Qingyang (2020) "Study of Light Extraction Efficiency for Thin-film-flip-chip Light-emitting Diodes with Periodic Spheroids," Journal of System Simulation: Vol. 28: Iss. 2, Article 16.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol28/iss2/16

First Page

369

Revised Date

2014-12-30

DOI Link

https://doi.org/

Last Page

375

CLC

TN312.8

Recommended Citation

Yu Xiaojie, Li Kang, Kong Fanmin, Yue Qingyang. Study of Light Extraction Efficiency for Thin-film-flip-chip Light-emitting Diodes with Periodic Spheroids[J]. Journal of System Simulation, 2016, 28(2): 369-375.