Abstract
For the application to advanced high-performance solar cells, we have developed n-type CZ monocrystalline silicon crystals whose lifetime values are almost equal to those of MCZ silicon. We analyzed this point in detail, using the Shockley-Read-Hall model. In our growth, liquinert silica crucibles having non-wettable properties for molten silicon were employed in a conventional CZ puller. The improved lifetime is likely due to reduced carbon impurity. The CZ growth technique with liquinert crucibles brings a novel approach to the new CZ technique because it can supply higher-quality silicon compared to silicon grown by conventional CZ technique.
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