Composite conjugated polymer-fullerene films [Elektronische Ressource] : structure property relation / eingereicht von: Uladzimir Zhokhavets

Technische Universit¨at IlmenauFakult¨at fur¨ Mathematik und NaturwissenschaftenInstitut fur¨ PhysikFachgebiet Experimentalphysik ICOMPOSITE CONJUGATEDPOLYMER/FULLERENE FILMS:STRUCTURE–PROPERTY RELATIONDissertation zur Erlangung des akademischen GradesDoctor rerum naturaliumEingereicht von:Dipl.-Phys. Uladzimir ZhokhavetsBetreuer:Prof. Dr. habil. Gerhard GobschGutachter:Prof. Dr. habil. Gerhard GobschProf. Dr. habil. Bernd Stuhn¨Dr. habil. Christoph BrabecEingereicht am: 13.07.2005Verteidigt am: 18.11.2005AbstractConjugatedpolymer/fullerenebasedplasticsolarcellsrepresentanexcitingalter-native to inorganic ones because of their low production costs, flexibility and lowweight. At present, commercialisation of plastic solar cells is limited due to theirrelativelylowefficiencyincomparisontosiliconones. Inordertounderstandtheoperation of plastic solar cells and to increase their efficiency, more informationabout structure of absorber layer is needed. Especially the connection betweenstructure and properties of the absorber layer is of great importance.The aim of this work was to study the correlation between structural, opticaland transport properties of conjugated polymer/fullerene films, which are usedas absorber layer in plastic solar cells. We start by investigation of pristine poly-thiophenefilms. FromX-raydiffractionandspectroscopicellipsometrystudiesitfollows, that the polythiophene films consist of a highly ordered interface layer.