Undergraduate Thesis Or Project
 

The interaction of bulk heterojunction donor/acceptor blends with polaritonic state creation in organic crystalline films

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/undergraduate_thesis_or_projects/b2774298n

Descriptions

Attribute NameValues
Creator
Abstract
  • We explore the interactions between charge transfer exciton states (CTEs) and an optical microcavity by testing the effects that cavity resonance has on the CTEs and if CTEs can be coupled with a photon to create quasiparticles known as polaritons. Exciton polaritonics is becoming a booming area of research mainly due to the variety of intriguing consequences of these quasiparticles. Here, we specifically look into how the environment can affect the creation of exciton polaritons in organics. To do this, we fabricated optical microcavities and placed a thin film of a functionalized Anthradithiophene derivative inside the cavity. The transmitted photoluminescence was measured at varying angles off of the cavity’s surface normal to gather spectra. Using the maximum energies of these peaks, we model the energies with respect to angle of detection. In this way, one can demonstrate Rabi splitting, thus verifying the existence of polaritons. Our data shows no Rabi splitting in a cavity that matches resonances with the CTEs, but that polaritons can form with the Frenkel exciton state when cavity resonance matches that of the Frenkel exciton. The combination of these phenomena is intriguing as it offers pathways to reduce CTEs creation in devices as well as the possibility of discovering a new form of polariton.
Contributor
License
Resource Type
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Rights Statement
Publisher
Peer Reviewed
Language

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details Thesis_CenterReid.pdf 2020-05-29 Public Download