@phdthesis{Gsaenger2013, author = {Gs{\"a}nger, Marcel}, title = {Organic Thin-Film Transistors Based on Dipolar Squaraine Dyes}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-80588}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2013}, abstract = {In summary, it can be stated that the herein studied set of acceptor-substituted squaraine dyes can be seen as potent candidates for OTFTs. Furthermore, their transistor performance can be easily tuned to obtain hole mobilities up to 0.45 cm2/Vs from solution and 1.3 cm2/Vs from sublimation by choosing adequate deposition techniques. In the end, a probable structural model derived from studies of the thin-film morphology by methods such as optical spectroscopy, AFM and X-ray even facilitated the clarification of the observed charge transport behavior.}, subject = {Organische Chemie}, language = {en} } @phdthesis{Schmidt2008, author = {Schmidt, R{\"u}diger}, title = {Perylene Bisimide and Acene Derivatives as Organic Semiconductors in OTFTs}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-29314}, school = {Universit{\"a}t W{\"u}rzburg}, year = {2008}, abstract = {This thesis deals with the synthesis of improved organic semiconductors, the detailed investigation of the molecular properties and the solid state arrangements revealed by single crystal X-ray diffraction and finally the development of structureperformance dependencies by measuring of the charge carrier mobilities of the derivatives in thin film transistors. The two main-goals of this thesis were achieved. Well soluble acene derivatives for spin-coated TFTs were obtained, showing charge carrier mobilities in the range of polymer p-type materials. Novel core-fluorinated perylene bisimide dyes were synthesized particularly and the use of electron deficient substituents lead to PBIs with outstanding air-stable mobilities in thin film transistors prepared by vacuum deposition techniques. The relationship between performance, air stability and solid state packing was elucidated in detail by single crystal X-ray diffraction analysis.}, subject = {D{\"u}nnschichttransistor}, language = {en} }