Organic light-harvesting materials for power generation

Chemistry;Organic chemistry;Squaraine;Chromophore;DSSC;Dye sensitized solar cells;OPV;Organic photovoltaic;Perylene;Surface modification;Solar cells;Semiconducting;Materials;Sensitizer;Oligothiophene;Benzodithiophene

Jradi, Fadi M. ; Chemistry and Biochemistry Bredas, Jean-Luc Kippelen, Bernard Reynolds, John Collard, David Marder, Seth R.

University:Georgia Institute of Technology

Department:Chemistry and Biochemistry

关键词: Chemistry;    Organic chemistry;    Squaraine;    Chromophore;    DSSC;    Dye sensitized solar cells;    OPV;    Organic photovoltaic;    Perylene;    Surface modification;    Solar cells;    Semiconducting;    Materials;    Sensitizer;    Oligothiophene;    Benzodithiophene;   

Others  :  https://smartech.gatech.edu/bitstream/1853/54976/1/JRADI-DISSERTATION-2016.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

This dissertation focuses on the design, synthesis, and characterization of a variety of organic dyes, semiconducting materials, and surface redox-active modifiers of potential interest to organic-based emerging photovoltaics. A discussion of the materials’ optoelectronic properties, their ability to modify and promote electron transfer through an organic/transparent conducting-oxide interface, and finally their effect on the photovoltaic properties of devices utilizing them as light-harvesters is provided where relevant. The first two research chapters discuss mono-chromophoric asymmetric squaraine-based sensitizers and covalently linked, dual-chromophoric, porphyrin-squaraine sensitizers as light absorbers in dye-sensitized solar cells (DSSCs), in an attempt to address two problems often encountered with DSSCs utilizing this class of near infra-red sensitizers; The lack of panchromatic absorption and aggregation on the surface. Also, this dissertation discusses the design and synthesis of asymmetric perylene diimide phosphonic acid (PDI-PA) redox-active surface modifiers, and reports on the electron-transfer rates and efficiencies across the interface of an ITO electrode (widely used in organic-electronic devices) modified with these perylene diimides. Finally two series of hole-transport materials based on oligothiophenes and benzodithiophenes are reported: optoelectronic properties and preliminary performance of organic photovoltaic (OPV) devices fabricated with them is discussed.