| 초록 |
To combine the optical properties of CdSe@ZnS quantum dots (QDs) with the electrical properties of conjugated polymers, we prepared QD/polymer hybrids by grafting a block copolymer (BCP) containing thiol anchoring moieties (i.e. poly(para-methyl triphenylamine-b-cysteamine acrylamide) in present study) onto the surface of QDs through the ligand exchange procedure. The prepared QD/polymer hybrids possess improved processability, for instance, enhanced solubility in various organic solvents, the film formation properties on various substrates along with the improved colloidal stability as a result of successful hybridization of QDs with polymer shells. We also demonstrated light-emitting diodes based on the QD/polymer hybrids, exhibiting the improved device performance (i.e., 3 fold increases in the external quantum dfficiency) compared with the deivces prepared by pristine (unmodified) QDs. |
