[20p-211A-1~18] 13.6 Nanostructures, quantum phenomena, and nano quantum devices

▲ [20p-211A-6] Ligand and Solvent Effects on Hole Transport in Colloidal Quantum Dot Assemblies

〇(DC)Liming Liu¹, Satria Bistri², Yasuhiro Ishida², Takuzo Aida^1,2, Yoshihiro Iwasa^1,2 (1.The Univ. of Tokyo, 2.RIKEN)

Keywords:quantum dots, ligand, solvent

Ligand and solvent engineering were found to permit significant enhancements of hole
transport in lead sulfide (PbS) QD films. Capping with a carboxylate ligand generally produces p-type doping of PbS QD films; furthermore, among various carboxylate ligands, thiophene-2,5-dicarboxylic acid provides PbS QD films with exceptionally high hole mobility values, and solvents with a high solvency power for the ligand are important for enhancing carrier mobility.