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Updated: Mar 14, 2026

Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
Ultra-small Ge1-xSnx quantum dots with visible photoluminescence
Richard J Alan Esteves1, Shopan Hafiz2, Denis O Demchenko3
1Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, USA. iuarachchige@vcu.edu.
Abstract:
Ge1-xSnx 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 Ge1-xSnx thin films and nanocrystals (NCs) reported to date.
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