[17a-Z18-1~10] 9.2 Nanoparticles, Nanowires and Nanosheets

▲ [17a-Z18-9] Selective-Surface-Ligand-Stripping-Driven Conducting Lead Sulfide Colloidal Quantum Dots Assembly

〇(D)Ricky Dwi Septianto^1,2, Retno Miranti¹, Nobuhiro Matsushita², Yoshihiro Iwasa^1,3, Satria Zulkarnaen Bisri^1,2 (1.RIKEN CEMS, 2.Tokyo Inst. of Tech., 3.The Univ. of Tokyo)

Keywords:Quantum Dots, Ligand-Stripping, Epitaxially-connected

The term of colloidal quantum dots (CQDs) is attributed to the solution-processable QDs materials which is attractive for many kind of appilcations such as opto-electronic and energy harvesting devices, owing to their intriguing properties due to the quantum confinement phenomenon. Currently, some studies show that removing or stripping the ligand (instead of ligand-exchange) form the specific facet of the QDs surface induces an oriented-assembly with the “epitaxially-connected” among the QDs. Here we demonstrate the effort on controlling the ligand-stripping process on lead sulfide (PbS) QDs to form an epitaxially-connected of the assembly as well as the measurement and investigation of its electronic properties.