4.7 Article

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

期刊

CHEMICAL COMMUNICATIONS
卷 55, 期 43, 页码 6102-6105

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc01676g

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资金

  1. Air Force Office of Scientific Research Young Investigator Program [FA9550-17-1-0170]
  2. Herbert L. Stiles faculty fellowship
  3. NSF Graduate Research Fellowship Program [DGE1744592]
  4. U.S. DOE [DE-AC02-07CH11358]
  5. U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division

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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 center dot 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.

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