| 초록 |
Inorganic colloidal nanocrystals(NCs) have been attractive building blocks for the benefits of inorganic superior properties with size-tunable electronic properties. In many practice, it has been recognized that special manipulation techniques are needed in the course of their synthesis step, post-synthetic treatment as well as introducing them in application in order to make the best use of them and attain great performance. Recently, the advent of inorganically capping for enhanced electronic coupling and surface trap state passivation through surface doping resulted in high-mobility charge transport in semiconducting NC films, making these nanomaterials promising for applications predominantly in the field of solid state electronic and optoeletronic such as field-effect transistors (FETs), solar cells, light-emitting diodes (LEDs), and complex, integrated, electronic circuits on flexible plastics. Recently, we have addressed solution processed high mobility CdSe NC based FETs. To form high mobility CdSe NC semiconducting channel for FETs, we combined solution-exchange of the long ligands used in synthesis with the compact SCN- ligand, to allow for strong NC coupling, with diffusion of elemental In, to electronically passivate and dope the NC channel. In this presentation, we will discuss 1) how surface chemistry and doping can enhance electronic transport in NC solids and 2) how different types of NCs can be utilized as promising components for the low-cost, large-area fabrication of nanocrystal device technologies. |
