Patent ID: 8062426

Claim:
A device for depositing crystalline layers on at least one crystalline substrate, comprising: a process chamber ( 5 ) formed by a number of wall elements ( 1 , 2 , 3 , 4 ), which wall elements ( 1 , 2 , 3 , 4 ) are electrically conductive and engage against one another, with touching contacts ( 2 ′, 2 ″, 3 ′, 3 ″) being formed; a reactor housing ( 6 ), accommodating the process chamber wall elements ( 1 , 2 , 3 , 4 ) and consisting of an electrically nonconductive material; an RF heating coil ( 7 ) surrounding the process chamber wall elements ( 1 , 2 , 3 , 4 ); and a one-piece, solid shielding/heating tube ( 8 ), which is disposed between the reactor housing ( 6 ) and the process chamber wall elements ( 1 , 2 , 3 , 4 ), the material of the shielding/heating tube ( 8 ) consisting of graphite and being electrically conductive in such a way that the shielding/heating tube ( 8 ) is heated by eddy currents induced by an RF field generated by the RF heating coil ( 7 ) and dampens the RF field to a considerable extent, the shielding/heating tube ( 8 ) surrounding the process chamber wall elements ( 1 , 2 , 3 , 4 ) in such a way that the process chamber wall elements ( 1 , 2 , 3 , 4 ) are primarily heated up by thermal radiation from the shielding/heating tube ( 8 ).