Numerical Simulation for Light Extraction in Nano-Patterned Light-Emitting Diodes
We present numerical simulation results using the three-dimensional finite-difference time-domain method for light extraction in light-emitting diodes (LEDs) constructed on nano-patterned n-GaN substrates. We studied reasonable conditions for numerical calculation, including
excitation source conditions, simulation size conditions, and boundary conditions and examined the effects of the size and distribution of nano-patterns on light extraction. Our findings revealed optimized structures for high extraction efficiency. Our simulation results were consistent with
our experimental results and show the potential for the design of LED structures optimized for high light extraction.
Keywords: FINITE-DIFFERENCE TIME-DOMAIN METHOD; LIGHT EXTRACTION; LIGHT-EMITTING DIODES; NANO-PATTERN
Document Type: Research Article
Publication date: 01 October 2008
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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