Title
Controlling J-aggregate formation for increased short-circuit current and power conversion efficiency with a squaraine donor
Abbreviated Journal Title
Prog. Photovoltaics
Keywords
aggregates; squaraines; organic photovoltaic cells; POLYMER SOLAR-CELLS; DYES; BLENDS; LAYERS; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
Abstract
A squaraine dye is tested for novel application in a near-infrared-active organic photovoltaic cell that is subsequently optimized to obtain a power conversion efficiency of 2.4 +/- 0.3%. The optimization utilizes an Alq3 buffer layer and macroscopic structure control through the addition of co-solvents in the spin-casting process. Co-solvent addition increases the amount of aggregates present as measured through linear absorption spectroscopy, and there is a concurrent increase in both efficiency and short-circuit current. An interpretation of the greatly increased current density is presented that describes how increased J-aggregation likely increases hole mobility and, as a result, charge separation of the photogenerated excited state. Copyright (c) 2012 John Wiley & Sons, Ltd.
Journal Title
Progress in Photovoltaics
Volume
22
Issue/Number
4
Publication Date
1-1-2014
Document Type
Article
DOI Link
Language
English
First Page
488
Last Page
493
WOS Identifier
ISSN
1062-7995
Recommended Citation
"Controlling J-aggregate formation for increased short-circuit current and power conversion efficiency with a squaraine donor" (2014). Faculty Bibliography 2010s. 6120.
https://stars.library.ucf.edu/facultybib2010/6120
Comments
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