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Full-Text Articles in Physical Sciences and Mathematics
Partially Halogenated Acenes And Heteroacenes For Organic Electronics, Balaji Purushothaman
Partially Halogenated Acenes And Heteroacenes For Organic Electronics, Balaji Purushothaman
University of Kentucky Doctoral Dissertations
Inorganic materials have dominated electronic applications such as photovoltaic cells, thin film transistors (TFTs) and light emitting diodes (LEDs). However developments in the field of organic electronics over the past three decades have enabled the use of organic materials in these devices. While significant improvements have been made to improve their electronic properties there are several road blocks towards commercial application. One of the significant obstacles is the poor charge carrier mobility associated with organic semiconductors processed by well established printing methods. The goal of my research project is to improve the charge carrier mobility of solution cast films of …
Periodic Trends In Structure Function Relationship Of Organic Heteroacenes, Marsha Loth Grimminger
Periodic Trends In Structure Function Relationship Of Organic Heteroacenes, Marsha Loth Grimminger
University of Kentucky Doctoral Dissertations
Our group has previously shown that small changes to molecular structure result in large changes to device properties and stability in organic electronic applications. By functionalizing aromatic heteroacenes with group 14 and group 16 elements, it is possible to control morphology and improve stability for a variety of applications such as thin film transistors and solar cells. Functionalization within the heteroacene core led to changes in electronic structure as observed by electrochemistry and light absorption. By substituting down the periodic table, the carbon heteroatom bond length increased, leading to subtle changes in crystal packing. Absorption maxima were red-‐shifted and stability …