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  4. Indolizine-Based Donors as Organic Sensitizer Components for Dye-Sensitized Solar Cells
 
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research article

Indolizine-Based Donors as Organic Sensitizer Components for Dye-Sensitized Solar Cells

Huckaba, Aron J.
•
Giordano, Fabrizio  
•
Mcnamara, Louis E.
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2015
Advanced Energy Materials

Strong electron-donating functionality is desirable for many organic donor-pi-bridge-acceptor (D-pi-A) dyes. Strategies for increasing the electrondonating strength of common nitrogen-based donors include planarization of nitrogen substituents and the use of low resonance-stabilized energy aromatic ring-substituted nitrogen atoms. Organic donor motifs based on the planar nitrogen containing heterocycle indolizine are synthesized and incorporated into dye-sensitized solar cell (DSC) sensitizers. Resonance active substitutions at several positions on indolizine in conjugation with the D-pi-A pi-system are examined computationally and experimentally. The indolizine-based donors are observed to contribute electron density with strengths greater than triarylamines and diarylamines, as evidenced by UV/Vis, IR absorptions, and oxidation potential measurements. Fluorescence lifetime studies in solution and on TiO2 yield insights in understanding the performance of indolizine-based dyes in DSC devices.

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Type
research article
DOI
10.1002/aenm.201401629
Web of Science ID

WOS:000352708600005

Author(s)
Huckaba, Aron J.
•
Giordano, Fabrizio  
•
Mcnamara, Louis E.
•
Dreux, Katelyn M.
•
Hammer, Nathan I.
•
Tschumper, Gregory S.
•
Zakeeruddin, Shaik M.  
•
Graetzel, Michael  
•
Nazeeruddin, Mohammad K.  
•
Delcamp, Jared H.  
Date Issued

2015

Publisher

Wiley-V C H Verlag Gmbh

Published in
Advanced Energy Materials
Volume

5

Issue

7

Article Number

1401629

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GMF  
LPI  
Available on Infoscience
May 29, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/114292
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