Degree Type

Creative Component

Semester of Graduation

Summer 2021

Department

Electrical and Computer Engineering

First Major Professor

Rana Biswas

Degree(s)

Master of Science (MS)

Major(s)

Electrical Engineering

Abstract

Poor light outcoupling efficiency is one of the main issues in Organic light-emitting diodes (OLEDs). A significant fraction of power is trapped in the high index layers as waveguided modes or lost at the metal cathode surface as plasmonic mode. Internal periodic corrugation inside OLEDs is a promising approach to extract waveguided and plasmonic modes, which can be diffracted back to the air cone to enhance the outcoupling. We develop a general computational framework to simulate the light emission from corrugated OLEDs, based on scattering matrix theory and Maxwell’s equations in Fourier space, with the environment-induced modification of the optical emission rate (Purcell effect). The emissive power inside and outside are calculated for corrugated OLEDs. We find it exhibits high light outcoupling 60~65% for optimal pitch values between 1-2.5 microns.

Copyright Owner

Zhang, Yu

File Format

PDF

Embargo Period (admin only)

6-16-2021

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