Effect of Amine Additive for the Synthesis of Cadmium Selenide Quantum Dots in a Microreactor

What is it about?

The effect of octylamine flow rate on the structure and morphology of CdSe quantum dots synthesized in a microreactor was studied. The flow rate of octylamine was varied from 0.005 ml/min to 0.030 ml/min, and the optical properties of the synthesized particles were analyzed by UV–vis and photoluminescence spectroscopy. The particle size of the quantum dots was found to increase with an increasing octylamine flow rate. Further, UV–vis and photoluminescence bands were found to be redshifted with an increasing flow rate. We determined that, by controlling octylamine flow rate, the particle size of the quantum dots could be controlled. This method will help to determine the optimal octylamine flow conditions for synthesizing nanoparticles for use in a diverse range of applications.

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Why is it important?

The effects of octylamine flow rate on CdSe QDs synthesis in a microreactor, and the properties of QDs synthesized, were explored. The octylamine flow rate significantly affects the size of the synthesized particles. At constant temperature, the particle size of the QDs synthesized is a function of flow rate; as flow rate increases, the size of QDs also increases. Also, the associated optical properties of the QDs were affected. We determined that, by controlling and optimizing the octylamine flow rate, the particle size of the QDs could be controlled.

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