17 research outputs found
Analysis of flammability and smoke emission of rigid polyurethane foams modified with nanoparticles and halogen-free fire retardants
Functionalization of 'kite' shaped styryl end-capped benzodithiophene with ketone groups: synthesis, characterization and properties
Electronic properties and field-effect transistors of oligomers based on thiophene and furan units end capped with benzofuran moieties
Core-cyanated distyryl-bithiophene Synthesis and impact on charge transport in field-effect transistors
French validation of the brief infant-toddler social and emotional assessment (BITSEA) in a population of 600 infants aged 12 to 36 months
Toward n-channel organic thin film transistors based on a distyryl-bithiophene derivatives
Comparison of p-channel transistors based on α,ω-hexyl-distyryl-bithiophene prepared using various film deposition methods
International audienceWe present a series of organic thin film transistor (OTFT) devices realized by vacuum evaporation, spincoating, drop casting and inkjet printing and a comparative analysis of their electrical response/behavior obtained under identical measurement conditions. A small molecule, α,ω-hexyl-distyryl-bithiophene DHDS2T, was used as a hole transporting active layer. Structure and morphology of thin films have been studied by atomic force microscopy, X-ray diffraction and optical microscopy. Different parameters linked directly to the processes (solvent, concentration, deposition method, surface, post-treatment...) are identified as key factors controlling film quality/crystallinity and device performances. This systematic study reveals the factors that limit efficient charge transport at the macroscopic scale of the channel length in OTFT devices