Analyses of Characteristics of Nano-Particle Scattering Layers
Date Issued
2012
Date
2012
Author(s)
Hsieh, Tzu-Wen
Abstract
In recent years, nano-particle scattering films are widely used in organic light-emitting devices (OLEDs) to enhance the optical out-coupling efficiency. How to design nano-particle diffuser films for better performance is the main topic of this thesis.
We first introduce the Optical Theorem in the electromagnetic theory, and then describe the scattering parameters, their physical meanings, and their association with the design of nano-particle scattering films. Mie theory gives the analytic solution of a plane wave incident on a single sphere. The scattering characteristics of a single sphere can be learned by writing a simulation program to implement this model. However, it is not sufficient for obtaining the overall scattering properties of a diffuser film composed of many particles. So we further introduce the Generalized Multi-Particle Mie-Solution, which is a numerical expansion method based on Mie Theory, and strictly obey the Maxwell equations. By implementing this model into computer programs, we can calculate the scattering properties of a variety of combinations of nano-particles.
Subjects
Organic Light-Emitting Diode
scattering film
nano-particles
multi-particle scattering
Mie Theory
Optical Theorem
Type
thesis
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