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题名: Effect of carbon types on the generation and morphology of GaN polycrystals grown using the Na flux method
作者: Liu, ZL(刘宗亮); Ren, GQ(任国强); Shi, L(石林); Su, XJ(苏旭军); Wang, JF(王建峰); Xu, K(徐科)
通讯作者: Liu, ZL (刘宗亮), Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China.
刊名: CRYSTENGCOMM
发表日期: 2015
DOI: 10.1039/c4ce01899k
卷: 17, 期:5, 页:7
收录类别: SCI
部门归属: 测试分析平台
英文摘要: The effect of different carbon types, including carbon nanotubes, active carbon, graphene, graphite, and ordered mesoporous carbon, on the suppression of polycrystal generation and morphology of GaN polycrystals grown by the Na flux method has been studied for the first time. The results of GaN growth by adding different purity graphite indicate that graphite with higher purity is better than lower purity ones at suppressing polycrystal generation. Furthermore, by comparing the different types of carbon, it is found that the suppression effect increases in the following order: carbon nanotubes, active carbon, graphene, graphite, and ordered mesoporous carbon, accompanied by the evolution of morphology. First-principles calculation and specific surface area measurement show that the C-N bond energy in carbon plays a key role in suppressing the polycrystals, rather than the specific surface area of carbon. A mechanism of C-N bonding in Na-Ga melts has been proposed to illustrate the difference in suppressing polycrystal generation and morphology evolution.
语种: 英语
JCR小类分区: 二区
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内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3500
Appears in Collections:测试分析平台_期刊论文

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Recommended Citation:
Liu, ZL,Ren, GQ,Shi, L,et al. Effect of carbon types on the generation and morphology of GaN polycrystals grown using the Na flux method[J]. CRYSTENGCOMM,2015,17(5):7.
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