Simulating exciton dynamics in organic semiconductors

Organic semiconductors are carbon-based semiconductors with number of unique benefits over traditional semiconductors such as low production costs, versatile synthesis processes, and high portability. Unlike traditional crystalline semiconductors that exhibit high level of homogeneity, organic semiconductors are spatially and temporally heterogeneous due to the weak van der Waals intermolecular forces. In this thesis we utilize computational and theoretical methods to investigate how this heterogeneity affects the electronic properties in organic semiconductors. In particular, we focus on two microscopic processes fundamental to the performance of organic semiconductors: the transport of Frenkel exciton and dissociation of charge-transfer (CT) exciton. Frenkel excitons are tightly bound electron-hole pairs created upon photo-excitation of molecules and they carry the excess energy imparted by photons.

Name thesis:degree_name

Doctoral

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Chemistry

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2019

Author dc:creator

• Lee, Chee Kong,Ph. D.Massachusetts Institute of Technology.

Advisor dc:contributor.advisor

• Adam P. Willard.

• Chemistry.

Statement dc:rights

• MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1721.1/121782

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/121782