Effect of crucible rotation on the temperature and oxygen distributions in Czochralski grown silicon for photovoltaic applications
文献信息
Alexandra Popescu, Martin P. Bellmann, Daniel Vizman
Temperature and oxygen distributions were numerically studied for the Czochralski (Cz) growth of 8′′ diameter silicon single crystals for photovoltaic applications. Fluctuations in the dopant concentration (striation pattern) in the grown crystal obtained by lateral photovoltage scanning (LPS) technique seems to be better correlated with simulated temperature fluctuations near the solid–liquid interface than with oxygen concentration oscillations. From the transient simulations of different crucible rotation rates, 2, 4, 6 and 8 rpm, it is indicated that the average oxygen melt concentration first decreases with increasing rotation rate and later increases. This suggests that a critical rotation rate exists where the oxygen concentration below the solid–liquid interface increases with increasing rotation rate. When comparing the temperature and oxygen distributions in the melt it was found that oxygen is more sensitive to changes in the rotation rate than the temperature.
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CrystEngComm

CrystEngComm is the forum for the design and understanding of crystalline materials. We welcome studies on the investigation of molecular behaviour within crystals, control of nucleation and crystal growth, engineering of crystal structures, and construction of crystalline materials with tuneable properties and functions. We publish hypothesis-driven research into… how crystal design affects thermodynamics, phase transitional behaviours, polymorphism, morphology control, solid state reactivity (crystal-crystal solution-crystal, and gas-crystal reactions), optoelectronics, ferroelectric materials, non-linear optics, molecular and bulk magnetism, conductivity and quantum computing, catalysis, absorption and desorption, and mechanical properties. Using Techniques and methods including… Single crystal and powder X-ray, electron, and neutron diffraction, solid-state spectroscopy, spectrometry, and microscopy, modelling and data mining, and empirical, semi-empirical and ab-initio theoretical evaluations. On crystalline and solid-state materials. We particularly welcome work on MOFs, coordination polymers, nanocrystals, host-guest and multi-component molecular materials. We also accept work on peptides and liquid crystals. All papers should involve the use or development of a design or optimisation strategy. Routine structural reports or crystal morphology descriptions, even when combined with an analysis of properties or potential applications, are generally considered to be outside the scope of the journal and are unlikely to be accepted.











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