Paper Title:
Fundamental Limitations of SiC PVT Growth Reactors with Cylindrical Heaters
  Abstract

The ability to set and accurately control the desired growth conditions is crucial in order to attain high quality bulk growth of Silicon Carbide (SiC), especially when the ingot size is large (> 2” in diameter by > 2” long). However, these two aspects of SiC PVT (Physical Vapor Transport) growth technology are severely limited in “conventional” SiC PVT growth reactors with single cylindrical heaters. To overcome such shortcomings, an “alternative” furnace design with two plane resistive heaters is proposed. In order to verify benefits of this design, numerical modeling and comparative procedures have been employed. Detailed comparative analysis revealed two fundamental disadvantages of the conventional furnace design, attributed to (a) – significantly higher in magnitude and spatially nonuniform distribution of the thermal stress that consequently deteriorates structural quality of the growing SiC boule, and (b) – inability to grow long (> 2”) monocrystalline ingots of SiC. Furthermore, the potential of the alternative furnace design to overcome fundamental limitations of the conventional design is also analyzed, with particular attention being paid to the processes of source material recrystallization.

  Info
Periodical
Materials Science Forum (Volumes 527-529)
Edited by
Robert P. Devaty, David J. Larkin and Stephen E. Saddow
Pages
15-20
DOI
10.4028/www.scientific.net/MSF.527-529.15
Citation
R. Drachev, E. Deyneka, C. Rhodes, J. Schupp, T. S. Sudarshan, "Fundamental Limitations of SiC PVT Growth Reactors with Cylindrical Heaters", Materials Science Forum, Vols. 527-529, pp. 15-20, 2006
Online since
October 2006
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Price
$32.00
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