Modeling and improvement of silicon ingot directional solidification for industrial production systems

Nucleation and bulk growth control for high efficiency silicon ingot casting

“…A method to predict the growth rate is therefore needed. Wei et al [7] proposed a method based on the temperature measurement by thermocouples on the top surface of the melt and in the heat exchanger block. They proved the relationship between measured temperatures and solidification location numerically.…”

“…They proved the relationship between measured temperatures and solidification location numerically. In this paper, we will further improve the simple model proposed by Wei et al [7].…”

Single-step directional solidification technology for solar grade polysilicon preparation

“…The energy consumption of the DS process is an important component of the total costs, which limits the cost of polysilicon. Zheng and Liu et al [9,10] found that the installation of a partition block between the hot and cold zones can effectively reduce the total power of the heater, decrease the heat losses from lateral parts of the crucible, and improve the efficiency of crystallization. Lan and Yoon et al [11,12] confirmed that different cooling paths and coolant flow rates at the bottom of crucible could change the rate of crystal growth and shorten the time cost of DS process.…”

Thermal system design and optimization of an industrial silicon directional solidification system

“…Much research has been conducted recently on this technology. Wei et al [1] conducted heat transfer and solidification simulations for an industrial silicon directional solidification system, and provided energy balance analysis. They found that 30% energy can be saved by placing a partition under the heater to isolate the hot and cold zones.…”