| Autor: |
Kartopu, G., Bayliss, S.C., Hummel, R.E., Ekinci, Y. |
| Předmět: |
|
| Zdroj: |
Journal of Applied Physics; 4/1/2004, Vol. 95 Issue 7, p3466-3472, 7p, 1 Black and White Photograph, 9 Graphs |
| Abstrakt: |
Microstructure and origin of the orange photoluminescence (PL) band of visible luminescing spark-processed germanium (sp-Ge) has been studied using simultaneous micro-Raman and -PL spectroscopy and scanning electron microscope. Instability of the sp-Ge film to energetic electron beams (>=5 keV) during SEM measurements suggested that sp-Ge is not composed exclusively of purely Ge–Ge bonded material (elemental Ge) but also of other form(s) of material(s) of different chemistry. Indeed, micro-Raman spectra of the films showed that sp-Ge is composed of mainly substoichiometric germanium oxides (GeO[sub x]s) and elemental Ge (in the form of nano- or micro-crystals). Further, it is proposed that the Ge particles were embedded in thick GeO[sub x] (0
|
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
