Patent ID: 7048802
Filing Date: 2006-05-23
Classification: C23C,C30B,Y10T

Abstract:
1. Device for depositing in particular crystalline layers on in particular crystalline substrates by means of reaction gases which are introduced into a process chamber which has been heated to a process temperature, the process chamber being the cavity in an in particular multipart graphite tube which is disposed in a reactor housing which in particular has quartz walls and which is surrounded by a high-frequency coil in the region of the process chamber, the space between the reactor housing wall and the graphite tube being filled by a graphite foam sleeve, characterized in that the graphite foam sleeve has a continuous slit running in the longitudinal and radial directions, the width of the slit being greater than the maximum expansion of the graphite foam sleeve in the circumferential direction which is to be expected during heating to the process temperature, wherein the slit, which runs substantially parallel to the longitudinal extent (axial direction) of the graphite foam sleeve, does not run in a straight line in the radial direction, and wherein the slit has a V-shaped profile.