Asymmetrical squaraine sensitizers with varying π-bridges and anchoring groups for dye sensitized solar cells

Pajares, Gabriel

Title:

Asymmetrical squaraine sensitizers with varying π-bridges and anchoring groups for dye sensitized solar cells

dc.contributor.advisor	Marder, Seth R.
dc.contributor.author	Pajares, Gabriel
dc.contributor.committeeMember	Qin, Dong
dc.contributor.committeeMember	Wilkinson, Angus
dc.contributor.department	Chemistry and Biochemistry
dc.date.accessioned	2015-08-18T19:15:07Z
dc.date.available	2015-08-18T19:15:07Z
dc.date.created	2015-05
dc.date.issued	2015-08-18
dc.date.submitted	May 2015
dc.date.updated	2015-08-18T19:15:07Z
dc.description.abstract	The work detailed in this thesis focuses on three separate projects. The first explored the effect of introducing conjugated π-bridges equipped with different solubilizing groups, and anchoring groups on the overall performance of asymmetrical squaraines; namely by enhancing their high energy absorption, reducing dye aggregation as well as electron recombination from the mesoporous TiO2 into the acceptors in the electrolyte. The second project looked into the effect of molecular iodine, a species that can be generated locally near the TiO2 surface, on enhancing unwanted electron recombination from TiO2 into the electrolyte. The synthesis of a squaraine-based dye containing a long, fluorinated alkyl chain, which have low binding affinity to iodine, positioned near the TiO2 surface can create a pseudo blocking layer which prevents acceptors in the electrolyte, namely molecular iodine, from capturing an injected electron from TiO2. The third project consisted of the incorporation of large, out-of-plane cyclic groups in the indole region of a donor- π-acceptor dye with the goal of studying the modification’s effect on dye spacing, aggregation, and possible excited state quenching.
dc.description.degree	Undergraduate
dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/53746
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology
dc.subject	Dye sensitized solar cells
dc.subject	Alternative energy
dc.subject	Solar cells
dc.subject	Squaraine
dc.subject	Panchromatic
dc.subject	Charge recombination
dc.subject	Aggregation
dc.subject	Power conversion efficiency
dc.subject	Clean energy
dc.subject	Organic synthesis
dc.title	Asymmetrical squaraine sensitizers with varying π-bridges and anchoring groups for dye sensitized solar cells
dc.type	Text
dc.type.genre	Undergraduate Thesis
dspace.entity.type	Publication
local.contributor.advisor	Marder, Seth R.
local.contributor.corporatename	School of Chemistry and Biochemistry
local.contributor.corporatename	College of Sciences
local.contributor.corporatename	Undergraduate Research Opportunities Program
local.relation.ispartofseries	Undergraduate Research Option Theses
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thesis.degree.level	Undergraduate