Microstructural and optical emission properties of diamond multiply twinned particles
Microstructural and optical emission properties of diamond multiply twinned particles
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DOI：
10.1063/1.5127170
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发表时间：
2020-01
期刊：
影响因子：
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通讯作者：
V. Lebedev;Taro Yoshikawa;Christoph Schreyvogel;L. Kirste;J. Weippert;M. Kunzer;A. Graff;O. Ambacher
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文献类型：
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作者：
V. Lebedev;Taro Yoshikawa;Christoph Schreyvogel;L. Kirste;J. Weippert;M. Kunzer;A. Graff;O. Ambacher
多重孪晶粒子是一种迷人的晶体学实体，由于其对称性和环状结构而具有许多可控的性质。我们研究的重点是金刚石MTP托管光学活性缺陷，对象展示了新兴的光电和量子器件的高应用潜力。在这项工作中，我们讨论了生长机制沿着的微结构和光学性能的MTPs聚集高密度的硅空位复合物的特定晶体不规则性。结果表明，硅杂质通过在规则八面体晶粒的100个晶面上密集形成穿透孪晶来激发MTP的快速生长。我们还表明，从嵌入在孪晶界的Si色心的零声子线发射占主导地位的MTP基发光器件的光和电致发光光谱定义其稳态光学性质。
Multiply twinned particles, MTPs, are fascinating crystallographic entities with a number of controllable properties originating from their symmetry and cyclic structure. In the focus of our studies are diamond MTPs hosting optically active defects, objects demonstrating a high application potential for emerging optoelectronic and quantum devices. In this work, we discuss the growth mechanisms along with the microstructural and optical properties of the MTPs aggregating high-density of silicon-vacancy complexes on the specific crystal irregularities. It is demonstrated that the silicon impurities incite a rapid growth of MTPs via intensive formation of penetration twins on 100 facets of regular octahedral grains. We also show that the zero-phonon-line emission from the Si color centers embedded in the twin boundaries dominates in photo- and electroluminescence spectra of the MTP-based light-emitting devices defining their steady-state optical properties.