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。

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The photonic band gap materials have wide potential applications in fabricating new type of optical devices.

光子晶体可以用来制备全新原理、高性能的光学器件，具有广阔的应用前景。

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Moreover, the band gap depends closely on the optimal thickness of intrinsic layer.

另外，禁带宽度对本征层最佳厚度也有一定的依赖关系。

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