3D-FIB Investigation of Cu Precipitates in c-Si after High Temperature Treatments

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ZUSCHLAG, Annika, David KOHBERGER, Giso HAHN, 2015. 3D-FIB Investigation of Cu Precipitates in c-Si after High Temperature Treatments. In: Energy Procedia. 77, pp. 238-241. eISSN 1876-6102. Available under: doi: 10.1016/j.egypro.2015.07.033

@article{Zuschlag20153DFIB-32406, title={3D-FIB Investigation of Cu Precipitates in c-Si after High Temperature Treatments}, year={2015}, doi={10.1016/j.egypro.2015.07.033}, volume={77}, journal={Energy Procedia}, pages={238--241}, author={Zuschlag, Annika and Kohberger, David and Hahn, Giso} }

Zuschlag, Annika Hahn, Giso Hahn, Giso Kohberger, David 3D-FIB Investigation of Cu Precipitates in c-Si after High Temperature Treatments Kohberger, David 2015-12-15T09:21:16Z Besides x-ray fluorescence (XRF) and transition electron microscopy (TEM), 3-dimensional focused ion beam (3D-FIB) combined with scanning electron microscopy (SEM) is an additional method to investigate the transition metal distribution in crystalline silicon material leading to additional information on the 3D shape, size and distribution of precipitates. The 3D-FIB method has been used to investigate the transition metal precipitate distribution around extended crystal defects, showing a strong influence of crystallographic parameters on the precipitation behavior. In addition, the transition metal precipitate distribution after a phosphorous (POCl<sub>3</sub>) diffusion process and a corresponding temperature profile alone has been investigated. During POCl<sub>3</sub> diffusion the transition metal precipitates dissolve and the transition metals move to regions with higher solubility leaving voids behind, which can still act as recombination active centers and have to be taken into account in further process treatments. The diffusivity and density of silicon self interstitials and the duration of the POCl<sub>3</sub> diffusion is not sufficient to fill the voids. If only the temperature profile of a POCl<sub>3</sub> diffusion is applied, the transition metal precipitates dissolve but return to the same sites during cool down due to a missing external getter sink. 2015-12-15T09:21:16Z 2015 eng Zuschlag, Annika

Dateiabrufe seit 15.12.2015 (Informationen über die Zugriffsstatistik)

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