Rigorous Electromagnetic Analysis of Organic Light-Emitting Diode Devices with One-Dimensional Gratings
Date Issued
2012
Date
2012
Author(s)
Chang, Ming-Wei
Abstract
In this thesis, we use rigorous coupled-wave analysis and transfer matrix method to simulate top emission organic light emitting diodes and bottom emission organic light emitting diodes. It is much more efficiency for periodic structure and multi-planar structure such as OLEDs.
Using green light OLED as sample, the wavelength of the peak in light spectrum is 535nm. The best extraction efficiency of planar top emission OLED is 28.55%, and of planar bottom emission OLED is 23.21%.
To improve the extraction efficiency, we add a one-dimensional rectangular / trapezoidal periodic grating layer in the structure. Finally, we successfully improve 20% extraction efficiency of top emission OLED and 12% (rectangular grating) / 18% (trapezoidal grating) of bottom emission OLED compared with planar OLED.
Subjects
Organic Light-Emitting Diodes
Rigorous Coupled-Wave Analysis
Transfer Matrix Method
One-Dimensional Gratings
Type
thesis
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