The present invention refers to an ammonobasic method for preparing a gallium-containing nitride crystal, in which gallium-containing feedstock is crystallized on at least one crystallization seed in the presence of an alkali metal-containing component in a supercritical nitrogen-containing solvent....http://www.google.de/patents/US7744697?utm_source=gb-gplus-sharePatent US7744697 - Bulk monocrystalline gallium nitride
