Degree Type

Dissertation

Date of Award

2013

Degree Name

Doctor of Philosophy

Department

Chemistry

First Advisor

Malika Jeffries-EL

Abstract

In recent years, alternating electron-donating and electron-acceptor (D-A) conjugated copolymers are among the best materials being used to fabricate high-efficiency bulk-heterojunction organic photovoltaics (BHJ-OPVs). Thiophene and thiophene-based aromatic molecules are typically used in the design and construction of these materials due to their ability to impart good film-forming and charge transport properties as well as their synthetic robustness. Among thiophene-based molecules benzo[1,2-b:4,5-b']dithiophene (BDT) has been incorporated into numerous, high-efficiency OPVs. This dissertation reports on the synthesis and characterization of the analogous oxygen- and selenium-containing functionalized benzodifuran (BDF) and benzodiselenophene (BDSe) and their incorporation into conjugated polymers as donor materials in BHJ-PVCs. Substitution of alternative chalcogens within the polymer backbone offers the potential for broader absorption of the solar spectrum, more favorable energy levels, and better charge transport properties. Additionally, the synthesis of the benzodichalcogenophenes (BDCs) reported herein results in synthetic handles, allowing for further functionalization that can be used to tune the properties of the subsequent polymers.

Copyright Owner

Brandon Michael Kobilka

Language

en

File Format

application/pdf

File Size

256 pages

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