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Colloidal Ge nanocrystals (NCs) are gaining increased interest because of their potential application in low-cost optoelectronic and light harvesting devices. However, reliable control of colloidal NC synthesis is often an issue and a deeper understanding of the key-role parameters governing NC growth is highly required. Here we report an extended investigation on the growth of colloidal Ge NCs synthesized from a one-pot solution based approach. A systematic study of the effects of synthesis time, temperature and precursor concentration is elucidated in detail. X-ray diffraction (XRD) analysis reveals the presence of crystalline Ge NCs with a mean size (from 5 to 35 nm) decreasing with the increase of precursor concentration. Such a trend was further confirmed by scanning electron microscopy (SEM) and dynamic light scattering (DLS) analysis. Moreover, the temporal NC size evolution shows a typical saturating …
Royal Society of Chemistry
Publication date: 
1 Jan 2016

Salvatore Cosentino, Giacomo Torrisi, Rosario Raciti, Massimo Zimbone, Isodiana Crupi, Salvo Mirabella, Antonio Terrasi

Biblio References: 
Volume: 6 Issue: 44 Pages: 38454-38462
RSC advances