Objective Organic π-conjugated materials have been studied intensively to promote their application in opto-electronic devices, especially in the field of light-emitting diodes (OLEDs) and organic solid state lasers (OSLs). OSL research is driven by the expectation of tuneable, cheap and flexible devices as well as new application areas, in particular in optical computing, data processing and sensing applications. Despite great success in optically pumped lasers, electrically driven lasers have not yet been realised, although the prerequisite - high internal quantum efficiencies of electrically generated photons - has been demonstrated in OLEDs. Thus, electrically pumped OSLs are mainly impeded by non-radiative losses by bimolecular recombination such as singlet-singlet, singlet-triplet and singlet-polaron quenching at higher excitation densities accompanied by the low charge carrier mobilities in the organic materials. These limitations might be overcome by organic crystals and crystalline films with well-defined long range molecular order which offer superior charge transport properties compared to amorphous materials. However, several challenges have to be faced integrating single crystals as the active medium in OSL devices, which define the key tasks of the project. 1. Understanding and optimising how different electronic/excitonic interactions and processes in organic crystalline materials affect the optical gain. 2. Examining the role of different bimolecular annihilation processes such as singlet singlet, singlet-triplet, and singlet–polaron in crystalline materials at high excitation densities, which limit the performance of such devices. 3. Imprinting resonator structures on the crystalline materials to reduce resonator losses. 4. Testing the viability as active materials in electrically injected lasers and also by indirect electrical pumping recently demonstrated in the host group. Fields of science engineering and technologymaterials engineeringcrystalsnatural sciencescomputer and information sciencesdata sciencedata processingnatural sciencesphysical sciencesopticslaser physicsnatural sciencesphysical sciencestheoretical physicsparticle physicsphotons Programme(s) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) FP7-PEOPLE-2013-IEF - Marie-Curie Action: "Intra-European fellowships for career development" Call for proposal FP7-PEOPLE-2013-IEF See other projects for this call Funding Scheme MC-IEF - Intra-European Fellowships (IEF) Coordinator THE UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS EU contribution € 231 283,20 Address NORTH STREET 66 COLLEGE GATE KY16 9AJ St Andrews United Kingdom See on map Region Scotland Eastern Scotland Clackmannanshire and Fife Activity type Higher or Secondary Education Establishments Administrative Contact Trish Starrs (Ms.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data
