Crystal articles and method for forming the same

Details Crystal articles and method for forming the same Crystal articles and method for forming the same

C - Chemistry, Metallurgy

30

B

148/1

C30B 25/02 (2006.01) C30B 25/18 (2006.01) H01L 21/20 (2006.01)

Patent

CA 1339827

A crystal article comprises; a substrate having i) a nonnucleation surface (SNDS) having a small nucleation density, ii) at least one single-nucleation surface (SNDL-S) provided adjacent to said nonnucleation surface (SNDS), having an area small enough for a crystal to grow from only a single nucleus and having a larger nucleation density (NDL) than the nucleation density (NDS) of said nonnucleation surface (SNDS), and iii) at least one multiple-nucleation surface (SNDL-M) having an area large enough for crystals to grow from plural nuclei and having a larger nucleation density (NDL) than the nucleation density (NDS) of said nonnucleation surface (SNDS); at least one monocrystal grown from said single nucleus and extending over said single-nucleation surface (SNDL-S) to cover part of said nonnucleation surface (SNDS); and a polycrystalline film grown from said plural nuclei to cover said multiple-nucleation surface.

562511

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