کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1660204 | 1517689 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design and simulation in GaN based light emitting diodes using focused ion beam generated photonic crystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Design and simulation in GaN based light emitting diodes using focused ion beam generated photonic crystals Design and simulation in GaN based light emitting diodes using focused ion beam generated photonic crystals](/preview/png/1660204.png)
چکیده انگلیسی
Two-dimensional photonic crystal (2D-PC) structures have been designed to increase the light extraction in GaN based semiconductor light-emitting devices (LED). The photonic crystals could be fabricated using the focused ion beam (FIB) in a dual-beam nanotechnology workstation system SMI 3050, both with and without platinum coating. The acceleration voltage of the Ga ion beam was fixed at 30 kV and the ion beam current was 6 nA. The LED area was 155 µm Ã 85 µm with both top and bottom pads. In addition, we developed Bandsolve simulation tools for the photonic crystal band structures, and the simulation results supported our experimental observations. It was based on the advanced implementation of the plane-wave expansion technique for periodic structures. The radius was varied from 0.05 µm to 0.5 µm and the period was from 0.1 µm to 1 µm. Both square lattice array and hexagonal lattice array patterns have been investigated. It showed the highest monitor intensity for the sample that has a hexagonal array structure, with 0.45 µm in radius and 0.9 µm in period. The optimized parameters would be used as design guides to fabricate 2D-PC air hole arrays on the p-GaN surface for LED structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 203, Issues 17â18, 15 June 2009, Pages 2674-2678
Journal: Surface and Coatings Technology - Volume 203, Issues 17â18, 15 June 2009, Pages 2674-2678
نویسندگان
G.M. Wu, Z.J. Cai, J.C. Wang, T.E. Nee,