Abstract
Nanostructures formed on a surface of a substrate are used as nucleation sites for epitaxial overgrowth of bulk gallium nitride semiconductor crystals including device layers. Nanocolumn nucleation sites are formed using a nanostructured mask on the substrate by etching the substrate or by selective area growth in the mask openings. The epitaxial growth method is used for fabricating gallium nitride optoelectronic devices.
Original language | English |
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Patent number | GB2446471 (A) |
IPC | H01L21/20,C30B25/18 |
Priority date | 9/02/07 |
Publication status | Published - 13 Aug 2008 |