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Guard Flow-enhanced Organic Vapor Jet Printing of Molecular Materials in Air.

dc.contributor.authorBiswas, Shaurjoen_US
dc.date.accessioned2014-06-02T18:15:45Z
dc.date.availableNO_RESTRICTIONen_US
dc.date.available2014-06-02T18:15:45Z
dc.date.issued2014en_US
dc.date.submitted2014en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/107205
dc.description.abstractRapid advances in the research and development of organic electronics have resulted in many exciting discoveries and applications, including OLEDs, OPVs and OTFTs. Devices based on small molecular organic materials often call for sharp interfaces and highly pure materials for improved device performance. Solvent-free deposition and additive patterning of the active layers without the use of vacuum is preferred, calling for specialized processing approaches. Guard flow-enhanced organic vapor jet printing (GF-OVJP), enables additive, rapid, mask-free, solvent-free printing of molecular organic semiconductors in ambient atmosphere by evaporating organic source material into an inert carrier gas jet and collimating and impinging it onto a substrate where the organic molecules condense. A surrounding annular “guard flow” hydrodynamically focuses the primary jet carrying the hot organic vapor and shields it from contact with the ambient ox-ygen and moisture, enabling device-quality deposits. Deposition in air entails non-trivial effects at the boundary between ambient surroundings and the gas jet carrying the semiconductor vapor that influence the morphology and properties of the resulting electronic devices. This thesis demonstrates the deposition of active layers of OLEDs, OPVs and OTFTs by GF-OVJP in air. Process-structure-property relationships are elucidated, using a combination of film deposition and structural characterization (e.g. AFM, XRD, SEM, spectroscopies), device fabrication and testing, as well as compressible fluid flow, heat and mass transport modeling, thus laying the groundwork for rigorous, quantitative design of film deposition apparatus and small molecular organic semiconductor processing.en_US
dc.language.isoen_USen_US
dc.subjectSmall Molecular Organic Semiconductor Films and Devicesen_US
dc.subjectSemiconductor Deposition and Patterning Techniquesen_US
dc.subjectProcess - Structure - Property Relationshipen_US
dc.subjectPrinting and Deposition of Device Active Layers in Airen_US
dc.subjectCVD of Parylene Polymer Films in Air for Encapsulationen_US
dc.subjectProcessing Systems Designen_US
dc.titleGuard Flow-enhanced Organic Vapor Jet Printing of Molecular Materials in Air.en_US
dc.typeThesisen_US
dc.description.thesisdegreenamePhDen_US
dc.description.thesisdegreedisciplineMaterials Science and Engineeringen_US
dc.description.thesisdegreegrantorUniversity of Michigan, Horace H. Rackham School of Graduate Studiesen_US
dc.contributor.committeememberShtein, Maxen_US
dc.contributor.committeememberPipe, Kevin Patricken_US
dc.contributor.committeememberKim, Jinsangen_US
dc.contributor.committeememberLahann, Joergen_US
dc.subject.hlbsecondlevelMaterials Science and Engineeringen_US
dc.subject.hlbtoplevelEngineeringen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/107205/1/shaurjo_2.pdf
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/107205/2/shaurjo_1.pdf
dc.owningcollnameDissertations and Theses (Ph.D. and Master's)


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