National Synchrotron Radiation Research Center, No. 101, Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan.
Anal Chem. 2015 Jul 21;87(14):7340-4. doi: 10.1021/acs.analchem.5b01493. Epub 2015 Jul 7.
Photoluminescent (PL) spectra of synthetic diamond powders at temperatures between 10 and 300 K were excited with synchrotron radiation in the wavelength range 125-375 nm. Prominent spectral PL features were detected at 484.6 and 489.0 nm (2.559 and 2.535 eV), associated with nickel defect. During our measurement of PL excitation (PLE) spectra of Ni defect in diamond, we observed a distinct PLE line at 215 nm for the first time. We thereby suggest the use of UV-PL spectra excited in the region 200-220 nm to analyze and to identify nickel defect in diamonds.
采用波长范围为 125-375nm 的同步辐射，对温度在 10 到 300K 之间的合成金刚石粉末进行了光致发光（PL）光谱激发。在 484.6nm 和 489.0nm（2.559eV 和 2.535eV）处检测到与镍缺陷有关的显著光谱 PL 特征。在对金刚石中镍缺陷的光致发光激发（PLE）光谱进行测量期间，我们首次观察到在 215nm 处有一个明显的 PLE 线。因此，我们建议使用在 200-220nm 区域激发的紫外光 PL 光谱来分析和识别金刚石中的镍缺陷。
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