Quantification of impurities in diatomite via sensitivity-improved calibration-free laser-induced breakdown spectroscopy†

IF 3.1 2区 化学 Q2 CHEMISTRY, ANALYTICAL
Nabila Belkhir, Sid Ahmed Beldjilali, Mohamed Amine Benelmouaz, Saad Hamzaoui, Anne-Patricia Alloncle, Christoph Gerhard and Jörg Hermann
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引用次数: 0

Abstract

The detection of impurities in diatomite is a critical issue during the silicon extraction process. Impurities can significantly impact the properties of silicon, compromising the performance of Si solar cells. In the present work, we applied a sensitivity-improved calibration-free LIBS measurement approach to assess the quality of diatomite. Based on the recording of two spectra with different delays between the laser pulse and the detector gate, the method enables the quantification of major, minor, and trace elements. The limits of detection for minor and trace elements were evaluated. Furthermore, we investigated the morphology and properties of the diatomite surface using Energy-Dispersive X-ray Spectroscopy and Scanning Electron Microscopy analysis. This research contributes to process optimization in the fabrication of electronic grade silicon from diatomite for photovoltaic technology and other applications.

Abstract Image

Abstract Image

通过灵敏度更高的免校准激光诱导击穿光谱定量硅藻土中的杂质
硅藻土中杂质的检测是硅提取过程中的一个关键问题。杂质会严重影响硅的性能,损害硅太阳能电池的性能。在本研究中,我们采用了一种灵敏度改进的免校准 LIBS 测量方法来评估硅藻土的质量。通过记录激光脉冲与检测器栅极之间不同延迟的两个光谱,该方法可对主要元素、次要元素和痕量元素进行量化。对次要元素和微量元素的检测限进行了评估。此外,我们还使用能量色散 X 射线光谱法和扫描电子显微镜分析法研究了硅藻土表面的形态和性质。这项研究有助于优化利用硅藻土制造电子级硅的工艺,以用于光伏技术和其他应用。
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来源期刊
CiteScore
6.20
自引率
26.50%
发文量
228
审稿时长
1.7 months
期刊介绍: Innovative research on the fundamental theory and application of spectrometric techniques.
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