CONTROLLED FORMATION OF DISLOCATIONS IN MONOCRYSTALLINE SYNTHETIC DIAMOND MATERIAL Russian patent published in 2015 - IPC C30B25/20 C30B29/04 H01L31/36 A44C17/00 

FIELD: chemistry.

SUBSTANCE: invention relates to production of monocrystalline diamond material by chemical vapour deposition (CVD), which is used in optical, mechanical, fluorescent and/or electronic devices. A diamond layer contains a mesh of nonparallel intercrossing dislocations as seen on an X-ray topographic sectional image or in conditions of a fluorescent technique, wherein the layer has thickness equal to or greater than 1 mcm; the mesh of nonparallel dislocations stretches across a volume which is at least 30% of the total volume of the diamond layer, and wherein the mesh of nonparallel dislocations contains a first set of dislocations propagating in a first direction through the diamond layer, and a second set of dislocations propagating in a second direction through the diamond layer, wherein the angle between the first and second directions is in the range of 40° to 100°, as seen on an X-ray topographic sectional image or in conditions of a fluorescent technique.

EFFECT: invention enables to control the type and/or direction of dislocations in a diamond material without affecting optical and/or electronic properties of devices based on said material and optimise said properties for a specific application.

12 cl, 8 dwg, 2 tbl, 3 ex