'In-Situ' Monitoring of CdSe/ZnS Quantum Dot Growth During Microwave Synthesis

摘要

We have studied the use of in-situ fluorescence spectroscopy for the optimization of a microwave synthesis of CdSe/ZnS core-shell quantum dots. In this research we demonstrate the usefulness of coupling a fluorescence spectrometer to the microwave reactor to quickly determine a range of appropriate temperatures and times to further optimize from. In contrast to previously published work, we determined that the microwave reaction temperature does not affect the fluorescence properties of our CdSe/ZnS particles within a range of 130 to 155 °C. Additionally, through more careful optimization, we have improved our previously published quantum yield of 13% to 19%.