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http://dx.doi.org/10.6111/JKCGCT.2018.28.5.179

Influence of relative distance between heater and quartz crucible on temperature profile of hot-zone in Czochralski silicon crystal growth  

Kim, Kwanghun (R&D Center, WoongjinEnergy)
Kwon, Sejin (R&D Center, WoongjinEnergy)
Kim, Ilhwan (Department of Electronic and Computer Engineering, Hanyang University)
Park, Junseong (Department of Electronic and Computer Engineering, Hanyang University)
Shim, Taehun (Department of Electronic and Computer Engineering, Hanyang University)
Park, Jeagun (Department of Electronic and Computer Engineering, Hanyang University)
Abstract
To lessen oxygen concentrations in a wafer through modifying the length of graphite heaters, we investigated the influence of relative distance from heater to quartz crucible on temperature profile of hot-zone in Czochralski silicon-crystal growth by simulation. In particular, ATC temperature and power profiles as a function of different ingot body positions were investigated for five different heater designs; (a) typical side heater (SH), (b) short side heater-up (SSH-up), (c) short side heater-low (SSH-low), (d) bottom heater without side heater (Only-BH), and (e) side heater with bottom heater (SH + BH). It was confirmed that lower short side heater exhibited the highest ATC temperature, which was attributed to the longest distance from triple point to heater center. In addition, for the viewpoint of energy efficiency, it was observed that the typical side heater showed the lowest power because it heated more area of quartz crucible than that of others. This result provides the possibility to predict the feed-forward delta temperature profile as a function of various heater designs.
Keywords
Czochralski method; Temperature profile; Silicon single crystal ingot; Charge size; Solar industry;
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