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Updated: Jun 23, 2026
A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals
Published on: May 10, 2018
Preparation of ZnS/CdSe/ZnS quantum dot quantum well by using a microfluidic reactor
Masato Uehara1, Hiroyuki Nakamura, Hideaki Maeda
1Micro-Nano Space Chemistry Group, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, 807-1 Shuku, Tosu, Saga 841-0052, Japan.
Abstract:
We have synthesized ZnS/CdSe/ZnS quantum dot quantum well (QDQW) by using a microfluidic reactor. The synthesized QDQW emitted blue fluorescence and the quantum yield was achieved at 50%. Furthermore, we were able to tune the photoluminescence wavelength while maintaining the full width at half maximum (FWHM) by controlling the flow rate in CdSe layer deposition process. Our results demonstrate that high quality CdSe phase was embedded in the ZnS core and shell, and the layer thickness was controlled homogeneously by using the microfluidic system. So, this system is considered as a useful tool for controlling the multilayer nanocrystals such as QDQW.
