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1·It is indicated that the boron doping promotes the growth of (111) face of the diamonds, enhances acceptor level, narrow 's band gap and increases carrier concentration correspondingly.

其原因是硼元素的掺入促进了金刚石单晶的(111)晶面生长，使受主能级提高，晶体的带隙变窄，载流子浓度提高。