[11p-W833-1~12] 9.2 Nanoparticles, Nanowires and Nanosheets

▲ [11p-W833-8] The Roles of Crosslinking Ligands on Charge Carrier Transport in PbS Colloidal Quantum Dot Assemblies

Ibuki Watanabe¹, Liming Liu¹, 〇Satria Zulkarnaen Bisri², Ian Johnson³, Yasuhiro Ishida², Jeremy Burroughes³, Yoshihiro Iwasa^1,2 (1.University of Tokyo, 2.RIKEN - CEMS, 3.CDT)

Keywords:colloidal nanocrystals, crosslinking ligands, field effect transistors

Here we show the selections of various ligand molecules that can crosslink PbS colloidal QDs to transport efficiently either holes or electrons; with reduced potential for volume shrinkage than the commonly used molecules. Despite some of the molecules are significantly longer than the conventional crosslinking ligands, the corresponding field-effect transistors can demonstrate comparable conductivity and on/off ratio characteristics.