Bulk-heterojunction hybrid solar cells based on colloidal CdSe quantum dots and conjugated polymers [Elektronische Ressource] / Yunfei Zhou

Bulk-heterojunction Hybrid Solar Cells Based on Colloidal CdSe Quantum Dots and Conjugated Polymers DISSERTATION ZUR ERLANGUNG DES AKADEMISCHEN GRADES EINES DOKTOR-INGENIEUR DER TECHNISCHEN FAKULTÄT DER ALBERT-LUDWIGS-UNIVERSTÄT FREIBURG IM BREISGAU YUNFEI ZHOU FREIBURG IM BREISGAU, 2011 DEKAN: Prof. Dr. Hans Zappe REFERENT: Prof. Dr. Gerald A. Urban (University of Freiburg) KOREFERENT: Prof. Dr. Klaus Meerholz (Unviersity of Cologne) DATUM DER DISPUTATION: 21.02.2011 Abstract Emerging alternative photovoltaic technologies such as dye sensitized solar cells (DSSCs) and organic solar cells (OSCs) have recently gained much attention and are on the step of being commercialized. Bulk-heterojunction hybrid solar cells containing inorganic nanoparticles and semiconducting polymers are still lagging behind the DSSCs and fullerene derivative-based OSCs in respect of device performance. Nevertheless, hybrid solar cells have the potential to exceed better performance while still retaining the benefits such as low-cost, thin and flexible, and easy to produce, because NCs have the features of tunable bandgap, high absorption coefficient, and high intrinsic charge carrier mobility. In addition, it is possible to synthesize stable elongated or even branched- nanostructures on the length scale of 2-100 nm with desirable exciton dissociation and charge transport properties.