Effect of the capillary meniscus on the instability of large Prandtl number Czochralski melt flow is studied experimentally. The measurements are conducted in two experimental facilities by two independent non-intrusive optical techniques. The quantitative results are presented as dependencies of the critical Grashof number (critical temperature difference) on the meniscus height for different ...

The DLTS (Deep Level Transient Spectroscopy) and PL (Photoluminescence) spectra of dislocations introduced in Cz-Si (single crystal grown by the Czochralski method) under clean conditions have been studied. The oxygen effect on the formation of both spectra has been revealed. For the first time, a concomitant decay of both PL and DLTS signals with deformation duration in the range of 0.25 to 14...

The microsegregation behaviour of antimony in the faceted and non-faceted Czochralski silicon crystal growth was analyzed quantitatively. Using small melt heights and no rotation, dopant striations of various small spacings were eliminated. Interface demarcation and spreading resistance measurements were used for the segregation analysis. The dopant concentration and its fluctuation during the ...

We have studied the effect of thermal history on iron precipitation behavior in intentionally contaminated Czochralski silicon wafers that contain well-defined precipitation sites for iron, oxide precipitates. Iron precipitation was studied at a temperature range between 600 C and 700 C for various times. The results indicate that iron precipitation is strongly affected by the thermal history o...

The temperature dependent band edge energy of the novel tungsten bronze type calcium barium niobate (CBN) is measured over a temperature range from 80 K to 573 K. CBN has been under investigation for serveral years and is believed to be a promising material for future applications. Czochralski-grown, colorless single crystals from the congruently melting composition with a calcium content of 0....