Quantitative Analysis of Nitrogen Defect N4 in Diamond with Photoluminescence Excited in the 170鈥?40 nm Region

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• 作者：Hsiao-Chi Lu ; Meng-Yeh Lin ; Yu-Chain Peng ; Jen-Iu Lo ; Sheng-Lung Chou ; Bing-Ming Cheng
• 刊名：Analytical Chemistry
• 出版年：2014
• 出版时间：October 21, 2014
• 年：2014
• 卷：86
• 期：20
• 页码：10497-10500
• 全文大小：256K
• ISSN：1520-6882

文摘

Upon excitation at 170鈥?40 nm, diamonds emit strong luminescence in wavelength range of 300鈥?00 nm. The spectral features observed in the photoluminescence excitation (PLE) spectra show two vibrational progressions, A and B, related to nitrogen defects N2 and N4, respectively. We used PLE spectra excited in region 170鈥?40 nm to identify the type of diamond and demonstrate quantitative analysis of the B center as a N4 nitrogen defect in diamonds; the least detectable concentration of the N4 nitrogen defect is about 13 ppb, and the sensitivity of PLE is about 30 times than that practicable with infrared absorption spectra.