Abstract/Details

Synthesis and self-assembly of diblock copolymers for photovoltaic applications


2010 2010

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Abstract (summary)

This dissertation explores the self-assembly of diblock copolymers as a way to control the morphology of photoactive layer in organic solar cells. Heterojunction formation between electron donor and electron acceptor materials needs to be controlled on the nanometer scale to have high power conversion from organic photovoltaic cells. Two approaches were developed to direct the assembly of electron-donors and electron-acceptors into heterojunction structures. The first one involves the synthesis of acid cleavable diblock copolymer to create porous polymer films, which can be used as templates to form well ordered donor-acceptor heterojunctions on the nanometer scale. Here, we demonstrate that nanoporous templates could be prepared under moderate conditions, which do not interfere with photovoltaic device fabrication. The second approach involves the use of conjugated diblock copolymers as the structure directing agents. Incompatible packing of the side chains was investigated to provide microphase segregation in conjugated polymer/fullerene blends. Packing of the materials within the domain has been shown to be a very important parameter for photovoltaic performances.

Indexing (details)


Subject
Chemistry;
Organic chemistry;
Polymer chemistry
Classification
0485: Chemistry
0490: Organic chemistry
0495: Polymer chemistry
Identifier / keyword
Pure sciences; Cleavage; Diblockcopolymers; Heterojunction; Nanoporous; Organic photovoltaics; Polythiophene; Self-assembly
Title
Synthesis and self-assembly of diblock copolymers for photovoltaic applications
Author
Yurt, Serkan
Number of pages
110
Publication year
2010
Degree date
2010
School code
0118
Source
DAI-B 71/12, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781124320496
Advisor
Venkataraman, Dhandapani
Committee member
Coughlin, Bryan E.; Lillya, Peter; Thayumanavan, Sankaran; Tuominen, Mark
University/institution
University of Massachusetts Amherst
Department
Chemistry
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3427578
ProQuest document ID
814863189
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/814863189
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