PhD Defense

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Event Details
  • Date/Time:
    • Monday March 3, 2014 - Tuesday March 4, 2014
      6:00 pm - 7:59 pm
  • Location: MoSE, 1226
  • Phone:
  • URL:
  • Email:
  • Fee(s):
    N/A
  • Extras:
Contact

Coralie Richard
Reynolds Research Group
Georgia Institute of Technology
Atlanta, GA, 30332-0400

Summaries

Summary Sentence: TAILORING BENZODITHIOPHENE CORE MOLECULES FOR ORGANIC ELECTRONIC APPLICATIONS

Full Summary: In this dissertation, the multiple facets of benzodithiophene (BDT) units are explored, with a focus on understanding how the isomerism of the BDT structure affects the macroscopic properties of the oligomeric and polymeric materials created. First, the story focuses on an overview of the BDT synthons and their applications in organic electronics. A straightforward synthesis of BDT and its derivatization to seven π-conjugated building blocks and seven polymers is presented. Then, symmetric (donor)2-acceptor (D2-A) dye architecture for application in dye-sensitized solar cells are investigated. Two isomeric systems are studied, and the branched sensitizers show a greater incident photon-to-current efficiency than the linear dyes. The nature of the accepting core is also varied between dibenzophenazine to dithienophenazine. The sensitizer with the weakest accepting core displays the best photovoltaic performance, due to an increase in the open-circuit voltage of ~100 mV caused by the favorable shift of the metal oxide conduction band. Lastly, a study of the donating building blocks in these (D2-A) sensitizers demonstrates that increasing the number of donor units from two to six thiophene moiety doubles the solar cell performance, due to the improvement of the light harvesting ability. 

Additional Information

In Campus Calendar
Yes
Groups

Hg Training

Invited Audience
Undergraduate students, Faculty/Staff, Public, Graduate students
Categories
Other/Miscellaneous
Keywords
No keywords were submitted.
Status
  • Created By: Coralie Richard
  • Workflow Status: Draft
  • Created On: Feb 24, 2014 - 5:57am
  • Last Updated: Apr 13, 2017 - 5:23pm