Title

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

Publication Date

4-29-2019

Department

Ames Laboratory; Chemistry; Chemical and Biological Engineering

Campus Units

Chemical and Biological Engineering, Chemistry, Ames Laboratory

OSTI ID+

1542939

Report Number

IS-J 9953

DOI

10.1039/C9CC01676G

Journal Title

Chemical Communications

Volume Number

55

Issue Number

43

First Page

6102

Last Page

6105

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.

DOE Contract Number(s)

AC02-07CH11358

Language

en

Department of Energy Subject Categories

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 77 NANOSCIENCE AND NANOTECHNOLOGY

Publisher

Iowa State University Digital Repository, Ames IA (United States)

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