title: Bicolor electroluminescent pixels from single active molecular material.
abstract: We report on the fabrication of the first bicolor micropixelated OLED from a single molecular material using a single-step bottom up procedure. The implementation of a deposition technique, based on a spatial-switch and conformational-sensitive STD surface-tension-driven lithography, has allowed us to exploit the spontaneous supramolecular properties and the conformational flexibility of a conjugated thiophene-based material, 6-bis-(50-hexyl-[2, 20]bithiophen-5-yl)-3, 5-dimethyl-dithieno[3, 2-b; 20, 30-d]thiophene (DTT7Me). The existence of two regularly alternating emitting regions on a micrometer scale allows obtaining electroluminescent emission at two different wavelengths from a single material.
authors.affiliation: National Nanotechnology Laboratory of INFM-CNR, Distretto tecnologico ISUFI, Via Arnesano, Lecce, Italy. ilenia.viola2unile.it
authors.forename: Ilenia
authors.initials: I
authors.lastname: Viola
authors.forename: Claudia
authors.initials: C
authors.lastname: Piliego
authors.forename: Laura
authors.initials: L
authors.lastname: Favaretto
authors.forename: Giovanna
authors.initials: G
authors.lastname: Barbarella
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Gigli
mesh_terms: D004563:Electrochemistry / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D008163:Luminescent Measurements / Q000295:instrumentation*; D008422:Materials Testing; D012666:Semiconductors; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D013876:Thiophenes