[10p-M111-1~9] Colloidal Quantum Dots: Fundamentals and Applications

▼ [10p-M111-5] Optical and Electronic Transport Properties of Solvent Mediated Self-Assembly of Lead Sulfide Nanocrystals

〇(DC)Liming Liu^1,2, Satria Bisri¹, Yasuhiro Ishida¹, Yoshihiro Iwasa^1,2, Takuzo Aida^1,2 (1.RIKEN, 2.The Univ. of Tokyo)

Keywords:quantum dots, self assembly, electronic transport

We demonstrate a solvent mediated self-assembly of lead sulfide (PbS) NCs through the liquid–air interface assembly technique. We show that PbS NCs could assemble into different structures (random, square lattice and honeycomb lattice) by controlling ligand coverage on the usage of different bottom solvents (methanol, dimethyl sulfoxide (DMSO), acetonitrile, respectively). Furthermore, the quantized transport of atomically connected PbS NC films made by DMSO was firstly and clearly characterized by measuring the electric double layer transistor performance and by spectro-electrochemistry.