Effects of spot size variation on the laser induced breakdown spectroscopy analysis of Cu(In,Ga)Se2 solar cell

Choi, Jang-Hee; Lee, Hak-Jae; Lee, Seok-Hee; In, Jung-Hwan; Jeong, Sungho

doi:10.1016/j.tsf.2018.06.034

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…In many studies, LTSD was optimized based on line intensity only [12,20,28]. That is, when the intensity of the characteristic line was maximum, the focus condition was determined as the best focusing position.…”

Section: Ltsd Effect On the Spectramentioning

confidence: 99%

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Lens-to-sample distance effect on the quantitative analysis of steel by laser-induced breakdown spectroscopy

Wang¹,

Li²,

Li³

et al. 2020

J. Phys. D: Appl. Phys.

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The focusing position of the laser affects the characteristics of the laser-induced plasma, which in turn influences the signal stability and the quantitative analysis of laser-induced breakdown spectroscopy. In this study, six standard alloy steels are used as the samples, and the trace elements including Si, Mn, Cr are quantitatively analyzed by internal standard method. The variations of line intensity, background noise intensity, signal-to-background ratio (SBR), detecting sensitivity and detection of limit (LOD) of the element with lens-to-sample distance (LTSD) were investigated. The results show that both the intensities of the analytical line and the background noise reached a maximum when the LTSD is 94 mm. While the corresponding SBR is relatively low. For quantitative analysis, it is observed that the change of the detection sensitivity with LTSD has the similar trend with that of SBR. That is, the detection sensitivity has a lower value when the LTSD is 94 mm. However, when the LTSD changes from 93 mm to 99 mm, LODs of the three elements are maintained at a small value. The present results indicate that for quantitative analysis of LIBS, the intensities of the analytical line and the background noise should be comprehensively considered when optimizing the laser focusing position.

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Section: Ltsd Effect On the Spectramentioning

confidence: 99%

“…They pointed out that fs laser-produced plasma(LPP) expansion appears to be approximately two times faster than ns LPP expansion for the their experimental conditions. Until recent years, there also have many studies related to the laser focusing conditions effect on laser-induced plasma [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Lens-to-sample distance effect on the quantitative analysis of steel by laser-induced breakdown spectroscopy

Wang¹,

Li²,

Li³

et al. 2020

J. Phys. D: Appl. Phys.

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“…According to the reduced laser fluence, that was applied to minimize the probe volume depth, the signal fluctuation was large. Semi-quantitative elemental measurements based on simple emission intensity ratio measurements were performed for other types of thin films [can05,Lee12,In13,Cho18]. Most of the analyzed layers had micrometer thickness.…”

Section: Need Of Quality Control In Thin Film Manufacturing Technologymentioning

confidence: 99%

LIBS Analysis of Optical Surfaces and Thin Films

Gerhard¹,

Hermann

2023

Laser Induced Breakdown Spectroscopy (LIBS)

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Elemental analyses of thin films and optical surfaces with complex compositions are challenging as the standard analytical techniques based on measurement calibration are difficult to apply. In this chapter, we show that calibration-free laser-induced breakdown spectroscopy presents a powerful solution, enabling rapid quantitative analyses of multi-elemental thin films or tiny surface volumes of optical materials with high analytical performances. Examples are given for classically polished optical glass and a nickel-chromium-molybdenum alloy film of 150 nm thickness. Thus, broadband spectra, recorded under experimental conditions that enable simple and accurate modeling of plasma emission, are processed via a calibration-free approach based on the calculation of the spectral radiance of a plasma in local thermodynamic equilibrium to deduce the elemental composition. The validation via energy-dispersive X-ray spectroscopy, inductively coupled plasma atomic emission spectroscopy, and Rutherford backscattering spectrometry illustrates that calibration-free LIBS is not only a promising tool, but already a reliable analytical technique.

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“…Diego-Vallejo et al 63,64 studied the selective ablation of copper-indium-diselenide solar cells using LIBS coupled with articial neural networks and clas-sication methods. Choi et al 65,66 studied the effect of laser spot size and wavelength in LIBS analysis of CIGS. Kim et al 67,68 compared LIBS thin lm and bulk analysis of CuIn 1Àx Ga x Se 2 , studying the inuence of wavelength on LIBS measurement of thin lm CIGS.…”

Section: Energy Industrymentioning

confidence: 99%