发明名称 |
Method and apparatus for delivering precursors to a plurality of epitaxial reactor sites |
摘要 |
PURPOSE: To improve the evaporation efficiency of a raw material by mounting an element of a porous sintered metal having the pore size smaller than the size of the solid raw material to a port for introducing a carrier gas into a bubbler vessel. CONSTITUTION: The solid raw material 2 is housed in the bubbler vessel 1 and is heated by a mantle heater, etc. The carrier gas is introduced from the introducing port 9 into the vessel 1 to generate the saturation pressure of the raw material 2. This material is sent into a film forming chamber 10 of the CVD device from a leading out pipe 8. The element 11 of the porous sintered metal is mounted to this introducing port 9. The carrier gas is ejected to a wide range from the many fine pores of the element 11 to the circumferences thereof and is uniformly dispersed. The wider contact area of the raw material 2 with the carrier gas is taken and the sufficient saturated steam pressure is obtd. The back flow of the raw material 2 to the mass flow controller is obviated even if the pressure on the film forming chamber 10 side increases. The damaging of the controller 4 is thus prevented.
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申请公布号 |
US2004164089(A1) |
申请公布日期 |
2004.08.26 |
申请号 |
US20040786698 |
申请日期 |
2004.02.25 |
申请人 |
EPICHEM LIMITED;IQE PLC |
发明人 |
RAVETZ MEGAN;WILLIAMS GRAHAM;NELSON ANDREW;BLUNT ROY TREVOR;WILLIAMS HOWARD;ODEDRA RAJESH |
分类号 |
C23C16/448;C30B25/14;H01L21/205;(IPC1-7):B67D5/00 |
主分类号 |
C23C16/448 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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