Synthesis of germanium nanocrystals from solid-state disproportionation of a chloride-derived germania glass.

Author(s) Wang, Y.; Ramesh, U.; Nyamekye, C.K.A.; Ryan, B.J.; Nelson, R.D.; Alebri, A.M.; Hamdeh, U.H.; Hadi, A.; Smith, E.A.; Panthani, M.G.
Journal Chem Commun (Camb)
Date Published 2019 May 23
Abstract

Germanium nanocrystals (Ge NCs) have potential to be used in several optoelectronic applications such as photodetectors and light-emitting diodes. Here, we report a solid-state route to synthesizing Ge NCs through thermal disproportionation of a germania (GeOX) glass, which was synthesized by hydrolyzing a GeCl2·dioxane complex. The GeOX glass synthesized in this manner was found to have residual Cl content. The process of nanocrystal nucleation and growth was monitored using powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy. Compared to existing solid-state routes for synthesizing colloidal Ge NCs, this approach requires fewer steps and is amenable to scaling to large-scale reactions.

DOI 10.1039/c9cc01676g
ISSN 1364-548X
Citation Wang Y, Ramesh U, Nyamekye CK, Ryan BJ, Nelson RD, Alebri AM, et al. Synthesis of germanium nanocrystals from solid-state disproportionation of a chloride-derived germania glass. Chem Commun (Camb). 2019;55(43):6102-6105.