Synthesis of germanium nanocrystals from solid-state disproportionation of a chloride-derived germania glass
| Autor: | Umar H. Hamdeh, Yujie Wang, Rainie D. Nelson, Utkarsh Ramesh, Atefe Hadi, Abdulla M. Alebri, Matthew G. Panthani, Bradley J. Ryan, Emily A. Smith, Charles K. A. Nyamekye |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Metals and Alloys Nucleation chemistry.chemical_element Germanium Disproportionation General Chemistry Catalysis Surfaces Coatings and Films Electronic Optical and Magnetic Materials symbols.namesake Colloid chemistry X-ray photoelectron spectroscopy Nanocrystal Chemical engineering Transmission electron microscopy Materials Chemistry Ceramics and Composites symbols Raman spectroscopy |
| Zdroj: | Chemical Communications. 55:6102-6105 |
| ISSN: | 1364-548X 1359-7345 |
| DOI: | 10.1039/c9cc01676g |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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