Patent ID: 8852343
Filing Date: 2014-10-07
Classification: C23C,C30B,Y10T

Abstract:
1. An apparatus for the vapour phase growing of crystals, the apparatus comprising: a single multi-zone heater arranged to heat a heated zone to give a predetermined temperature profile along the length of the heated zone; a generally U-shaped tube arranged to be provided within the heated zone, the generally U-shaped tube having a first limb, a second limb, and a linkage connecting the first and second limbs, wherein the first limb has a first length and the second limb has a second length different from the first length, and wherein the first limb has a source region arranged to contain a source material; and, a support for supporting a seed in the second limb such that the support and the source region are spaced longitudinally within the heated zone to provide a predetermined temperature differential between the source region and support.