A population balance model of quantum dot formation: Oriented growth and ripening of ZnO

Segets D, Hartig MAJ, Gradl J, Peukert W (2012)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2012

Journal

Chemical Engineering Science Elsevier

Publisher: Elsevier

Issue: ASAP

Journal Issue: ASAP

DOI: 10.1016/j.ces.2011.04.043

Abstract

The precipitation of zinc oxide (ZnO) semiconductor quantum dots was investigated throughout the whole particle formation process, namely reaction, nucleation, growth and ripening and described by means of population balance equations (PBE). Regarding nucleation, the simulation revealed that the mechanism for the solid formation is by orders of magnitude lower than predicted by classical homogeneous nucleation theory. Thus, the earliest stages of particle formation were described by a combination of reaction kinetics determined by experiments for the formation of preformed clusters and subsequent oriented cluster aggregation. Finally, slow Ostwald ripening, i.e. the growth of larger structures at the expense of smaller particles, was modeled in good agreement with the already experimentally determined particle sizes for ripening temperatures between 10 and 50 °C.

Authors with CRIS profile

Doris Segets Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Martin Andreas Johannes Hartig Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Wolfgang Peukert Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

How to cite

APA:

Segets, D., Hartig, M.A.J., Gradl, J., & Peukert, W. (2012). A population balance model of quantum dot formation: Oriented growth and ripening of ZnO. Chemical Engineering Science, ASAP. https://doi.org/10.1016/j.ces.2011.04.043

MLA:

Segets, Doris, et al. "A population balance model of quantum dot formation: Oriented growth and ripening of ZnO." Chemical Engineering Science ASAP (2012).

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