Ultra-small Ge1−xSnx quantum dots with visible photoluminescence

Richard J Alan Esteves; Shopan Hafiz; Denis O. Demchenko; Ümit Özgür; Indika U. Arachchige

doi:10.1039/C6CC04242B

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Ultra-small Ge_1−xSn_x quantum dots with visible photoluminescence†

Richard J Alan Esteves,^a Shopan Hafiz,^b Denis O. Demchenko,^c Ümit Özgür^b and Indika U. Arachchige*^a

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* Corresponding authors

^a Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, USA
E-mail: iuarachchige@vcu.edu

^b Department of Electrical and Computer Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, USA

^c Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, USA

Abstract

Ge_1−xSn_x alloy quantum dots (QDs) were synthesized with sizes ranging from 1–3 nm exhibiting visible orange-red photoluminescence. Composition dependent optical properties were characterized and supported by theoretical calculations. Structural analysis suggests the QDs are diamond cubic phase, characteristic of Ge_1−xSn_x thin films and nanocrystals (NCs) reported to date.

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Article information

DOI: https://doi.org/10.1039/C6CC04242B
Article type: Communication
Submitted: 19 May 2016
Accepted: 01 Sep 2016
First published: 02 Sep 2016

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Chem. Commun., 2016,52, 11665-11668

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Ultra-small Ge_1−xSn_x quantum dots with visible photoluminescence

R. J. Alan Esteves, S. Hafiz, D. O. Demchenko, Ü. Özgür and I. U. Arachchige, Chem. Commun., 2016, 52, 11665 DOI: 10.1039/C6CC04242B

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