Date of Award
2026
Document Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Optical Science and Engineering
Committee Chair
Seyed Sadeghi
Committee Member
Don Gregory
Committee Member
Lingze Duan
Committee Member
James Baird
Committee Member
Du Le
Research Advisor
Seyed Sadeghi
Subject(s)
Quantum dots, Diffusion, Exciton theory, Energy transfer
Abstract
Quantum dots are heavily used in modern devices, such as consumer television screens, lasers, medical sensors, solar cells, and quantum computing. Their tunability and photo-stability make them candidates for a variety of applications which formerly required either dyes or significant amounts of band structure engineering. Despite all of the current and active applications, there is a gap in the current literature with regards to how energy is transported through thin films of quantum dots, and what methods may be used to control transport direction and range. The goal of this dissertation is to help fill those gaps, towards the end of providing a platform for plasmonic steering of exciton diffusion to be developed. This goal has been accomplished through the ground-up development of a high precision measurement system. Following this development, almost all variables expected to influence diffusion were tested, leading to the conclusion that excitonic energy transport may be controllable. The observations were supported by and used in the development of a simulation technique capable of recreating measured behaviors.
Recommended Citation
Roberts, Dustin, "Diffusion of excitons in thin films of quantum dots" (2026). Dissertations. 508.
https://louis.uah.edu/uah-dissertations/508