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

▲ [10p-M111-4] Carrier Doping and Assembly Control of Colloidal Quantum Dot Solids for Energy Harvesting Devices

〇Satria Zulkarnaen Bisri^1,2 (1.RIKEN - CEMS, 2.Tokyo Inst. of Tech.)

Keywords:colloidal quantum dots, semiconductor nanocrystals, electronic transport

Colloidal quantum dot solids (QDs) are solution-processable thin-films that exploit the quantum confinement properties of the constituent nanocrystals. These important properties of the QDs are intriguing for applications in different kinds of energy-converting, -storage and -harvesting devices. Here charge carrier control in thin film assemblies of colloidal semiconductor QDs will be discussed. We will explain how to control the assembly morphology by various deposition techniques and how to crosslink the colloidal QDs. Furthermore, the demonstration of various approaches of carrier doping into lead chalcogenide QD assemblies will be explained, which involve either chemical approach (e.g. ligand modification, etc.) or physical approach (field-induced doping).In the end, the implications of carrier control on the usage of QD assemblies for energy harvesting will be explained, in particular within photovoltaic and thermoelectric contexts, in which efficient charge carrier transport are the prerequisites.