Heat-induced transformation of CdSe-CdS-ZnS core-multishell quantum dots by Zn diffusion into inner layers

Anil O Yalcin, Bart Goris, Relinde Moes, Zhaochuan Fan, Ahmet K Erdamar, Frans D Tichelaar, Thijs J H Vlugt, Gustaaf Van Tendeloo, Sara Bals, Daniël Vanmaekelbergh, Henny W Zandbergen, Marijn A van Huis

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

In this work, we investigate the thermal evolution of CdSe-CdS-ZnS core-multishell quantum dots (QDs) in situ using transmission electron microscopy (TEM). Starting at a temperature of approximately 250 °C, Zn diffusion into inner layers takes place together with simultaneous evaporation of particularly Cd and S. As a result of this transformation, CdxZn1-xSe-CdyZn1-yS core-shell QDs are obtained.

Original languageEnglish
Pages (from-to)3275–3476
Number of pages4
JournalChemical Communications
Volume51
Issue number16
Early online date21 Nov 2014
DOIs
Publication statusPublished - 25 Feb 2015

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