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Segmented Flow‐Based Multistep Synthesis of Cadmium Selenide Quantum Dots with Narrow Particle Size Distribution
Author(s) -
Misuk Viktor,
Schmidt Maxim,
Braukmann Sandra,
Giannopoulos Konstantinos,
Karl Dominik,
Loewe Holger
Publication year - 2015
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500115
Subject(s) - nucleation , cadmium selenide , microreactor , quantum dot , particle size distribution , particle size , materials science , nanoparticle , nanotechnology , flow (mathematics) , continuous flow , selenide , particle (ecology) , nanocrystal , flow chemistry , distribution (mathematics) , chemical engineering , chemistry , physics , thermodynamics , selenium , mechanics , mathematics , metallurgy , organic chemistry , catalysis , mathematical analysis , oceanography , engineering , geology
A continuous‐flow microreactor was used to synthetize II–VI semiconductor quantum dots (CdSe). In order to improve the size distribution of the nanoparticles, the synthesis was carried out in a two‐step procedure. A seed solution was obtained in a separate nucleation step, followed by a controllable growth step. Quantum dots that are synthesized with the two‐step method show a much narrower size distribution in comparison to those obtained in a conventional batch synthesis.