Method and apparatus for aluminum nitride monocrystal boule growth [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 2009.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Additional Creators:
- United States. Department of Energy. Carlsbad Field Office
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information - Access Online:
- www.osti.gov
- Summary:
- A crystal growth setup within a physical vapor transport growth furnace system for producing AlN monocrystal boules at high temperatures includes a crucible effective to contain an AlN source material and a growing AlN crystal boule. This crucible has a thin wall thickness in at least that portion housing the growing AlN crystal boule. Other components include a susceptor, in case of an inductive heating, or a heater, in case of a resistive heating, a thermal insulation enclosing the susceptor or heater effective to provide a thermal gradient inside the crucible in the range of 5-100.degree. C./cm and a furnace chamber capable of being operated from a vacuum (<0.1 torr) to a gas pressure of at least 4000 torr through filling or flowing a nitrogen gas or a mixture of nitrogen gas and argon gas. The high temperatures contribute to a high boule growth rate and the thin wall thickness contributes to reduced imparted stress during boule removal.
- Subject(s):
- Note:
- Published through SciTech Connect.
04/28/2009.
"7,524,376"
"US patent application 11/789,590"
Wang, Shaoping. - Funding Information:
- FG02-05ER84232
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