量子点
配体(生物化学)
环境友好型
对偶(语法数字)
化学
流量(数学)
阶段(地层学)
材料科学
纳米技术
物理
地质学
生物
文学类
艺术
古生物学
受体
机械
生物化学
生态学
作者
Dae-Kue Hwang,Hyo Jeong Jo,Dae-Hwan Kim,Eui Jin Lee,Robert P.H. Chang
标识
DOI:10.1016/j.jpowsour.2022.232344
摘要
The large-scale synthesis of non-toxic, efficient quantum dots (QDs) is critical for expanding the practical application scope of QD-based photovoltaic (PV) devices. In this study, we synthesize ZnCuInSSe (ZCISSe) QDs on a gram scale (3.5 g) using a hybrid flow reactor method. This method is capable of producing QDs in gram quantities using solid-state chemicals. Additionally, by observing the composition, composition ratio, and reaction temperature, it is possible to produce ZCISSe QDs with highly controllable stoichiometry and a tuneable bandgap. Moreover, to improve the surface conditions of ZCISSe QDs, we propose for the first time the use of different types of surfactants with oleylamine (OAm) and S 2− surface ligands via ligand-exchange techniques. Subsequently, we validate the PV quality of the manufactured ZCISSe QDs. Additionally, we develop QD-based solar cells, in which the TiO 2 film functions as an n-type semiconductor. The S 2- -ligand-capped QD solar cell has a 25% higher power conversion efficiency than the OAm-ligand-capped QD solar cell. • ZCISSe QDs was synthesized using an expandable and automatic flow-synthesis method. • The QDs had highly controllable stoichiometry and tunable bandgap. • Ligand-exchange surfactants can improve the surface conditions of the QDs. • Procedure is reproducible and adaptable to the production of QDs on a gram scale.
科研通智能强力驱动
Strongly Powered by AbleSci AI