Date of Completion

2021

Document Type

Honors College Thesis

Department

Physics

Thesis Type

Honors College, College of Arts and Science Honors

First Advisor

Matthew S. White

Keywords

OLED, optoelectronic, optics, LED, optical microcavity

Abstract

The objective of this project is the creation of microcavity-based organic light-emitting diodes (OLEDs) emitting light across the visible spectrum, building on Ben Isenhart’s findings on the control of OLED devices’ peak emission and Gather et al’s work with multicolored OLEDs. Both theoretical and experimental work is pursued for this project. Device fabrication is experimentally challenging and required thin film deposition without substrate rotation to deposit charge transport layers with a linear gradient. The emission spectrum of fabricated devices is characterized using angle-resolved electroluminescence spectroscopy (ARES). While the simulated devices show emission across the visible spectrum from red-orange to blue-violet, the fabricated devices only emitted light in the blue to green range. The findings do confirm that varying cavity thickness does alter the emission spectrum of a device. In order to create a device with emission spanning more of the visible spectrum, there are multiple experimental methods that can be used to achieve more variation in device thickness across either one device or a batch of devices.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

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