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Soluble Titanyl Phthalocyanines with Enhanced Thin-Film Near-IR Absorptivity

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InventionThis patent application discloses materials and methods for making Titanyl Phthalocyanines and rendering it soluble using peripheral substituents. In addition, the method eliminates the need for a solvent in the synthesis step, and increases the purity of yield of the isolated materials. Furthermore, the organic molecules exhibit increased absorbance of near-infrared light, increasing the potential number of photons that can be converted to charge carriers in OPV, consequentially, increasing the overall efficiency of an OPV device. In a nutshell, these TiOPc derivatives with peripheral substituents provide increased solubility of TiOPc and optimized solid-state morphology, which has not been achieved before.BackgroundPhthalocyanines are a versatile class of p-conjugated organic semiconductors applicable as materials in several electronic devices such as organic xerographic protoreceptors, nonlinear optical components, field-effect transistors, organic light-emitting diodes, and solar cells (i.e. organic electronics). Titanyl Phthalocyanine (TiOPc) is a known photoconductor and solid state IR absorber. Absorption of light in thin-films of organic semi-conductors is one of the four major processes - light absorption, exciton migration, charge separation, charge collection - that are essential for performance of an organic photovoltaic (OPV) device.ApplicationsTiOPc derivatives can be used as the organic donor material in Organic Photovoltaic (OPV) devices. Phthalocyanines are also applicable to organic field effect transistors (OFETs)Can be used in organic light emitting devices (OLEDs).AdvantagesProvides a method making the manufacture of Phthalocyanines easier, cheaper and more environmentally friendly. A method of solubilizing Titanyl Phthalocyanines, making the production of thin films and coatings cheaper and easier. These materials adsorb light into the near IR region, up to 1000 nanometers, a wavelength that other solar cell technology cannot utilize. These Titanyl Phthalocyanines thin films are photovoltaic. These Titanyl Phthalocyanines materials can be incorporated into bulk hetero-junctions, meaning the material can be intimately mixed with other photovoltaic materials in a single layer making the free exchange of electrons more efficient. InventorDominic V. McGrathContactLaura SilvaLauraS@tla.arizona.edu(520) 626-1557

*Abstract

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*Principal Investigation

Name: Dominic Mcgrath, Professor

Department: Chemistry & Biochemistry

Name: Mayank Mayukh, Graduate Assistant, Research

Department: Chemistry & Biochemistry

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美国