Abstract

We synthesized diamond particles with germanium-vacancy color centers on a germanium substrate by hot-filament chemical vapor deposition. The formation of color centers occurred during the growth of diamond particles by the introduction of germanium atoms formed by the etching of a crystalline germanium wafer with atomic hydrogen. The conditions of the vapor phase deposition, which affect the photoluminescence of germanium-vacancy color centers in diamond particles, are considered. The highest photoluminescence intensity of germanium-vacancy color centers was achieved for diamond particles obtained on a substrate at a temperature of its surface close to the melting point of germanium. In the photoluminescence spectra of diamond particles, we also observed the lines presumably related to optical centers including tu-ngsten.

中文翻译：

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化学气相沉积获得的金刚石粒子中锗空位色心的光致发光

摘要

我们通过热丝化学气相沉积法在锗基底上合成了具有锗空位色心的金刚石颗粒。色心的形成是在钻石颗粒的生长过程中发生的，其中引入了锗原子，该锗原子是用原子氢蚀刻晶体锗晶片而形成的。考虑了气相沉积的条件，该条件影响金刚石颗粒中锗空位色心的光致发光。对于在其表面温度接近锗熔点的情况下在基板上获得的金刚石颗粒，可获得锗空位色心的最高光致发光强度。在金刚石颗粒的光致发光光谱中，我们还观察到了可能与包括tu-ngsten在内的光学中心有关的线。