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    • 1. 发明授权
    • Method for the manufacture of large single crystals
    • 制造大型单晶的方法
    • US5443032A
    • 1995-08-22
    • US895482
    • 1992-06-08
    • Miroslav VichrDavid S. Hoover
    • Miroslav VichrDavid S. Hoover
    • C30B25/02C30B25/04C30B25/18C30B29/04C30B33/08H01L21/205H01L21/314C30B25/06
    • C30B25/02C30B25/18C30B29/36C30B29/40
    • A method is disclosed for producing large single crystals. In one embodiment, a single crystal of electronic grade diamond is produced having a thickness of approximately 100-1000 microns and an area of substantially greater than 1 cm..sup.2. and having a high crystalline perfection which can be used in electronic, optical, mechanical and other applications. A single crystalline diamond layer is first deposited onto a master seed crystal and the resulting diamond layers can be separated from the seed crystal by physical, mechanical and chemical means. The original master seed can be restored by epitaxial growth for repetitive use as seed crystal in subsequent operations. Large master single crystal diamond seed can be generated by a combination of oriented smaller seed crystals by lateral epitaxial fusion. Since there is no limit to how many times seed combination step can be repeated, large diamond freestanding wafers comparable in size to silicon wafers can be manufactured.
    • 公开了用于生产大型单晶的方法。 在一个实施例中,制造了具有大约100-1000微米的厚度和基本上大于1cm 2的面积的电子级金刚石的单晶。 并且具有可用于电子,光学,机械和其它应用的高结晶完美性。 首先将单晶金刚石层沉积到母晶种上,并且通过物理,机械和化学方法将所得金刚石层与晶种分离。 可以通过外延生长恢复原始的主种子,以便在随后的操作中重复使用作为晶种。 大型单晶金刚石种子可以通过横向外延融合的取向较小晶种的组合产生。 由于可以重复种子组合步骤多少次的限制,因此可以制造尺寸相当于硅晶片的大型金刚石独立晶片。