2012
DOI: 10.1063/1.3700214
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Experimental analysis and computer simulation of a methodology for laser focusing in the solar cell characterization by laser beam induced current

Abstract: This paper presents a quick methodology for focusing a laser beam on a photoactive surface based on performing a single line scan while simultaneously modifying the laser's position over the surface and the distance between the focusing lens and the active surface. The methodology was tested using the computer simulation technique. Several configurations were computer simulated by programming different experimental situations to discover the situations in which this focusing methodology would provide optimum r… Show more

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Cited by 4 publications
(3 citation statements)
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“…With the exception of one method [11], these provide no compensation for geometrical surface changes (e.g., a bent or tilted surface) during the measurement, as the focus adjustment is fixed and done prior to the scan. The approach published by Navas et al uses a computer simulation to adapt the focus during the measurement [11]. Optimal focus conditions are found by analyzing simulated optical beam-induced current (OBIC) line scans, obtained for different distances between the sample and the focusing objective, in combination with an experimental verification.…”
Section: Introductionmentioning
confidence: 99%
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“…With the exception of one method [11], these provide no compensation for geometrical surface changes (e.g., a bent or tilted surface) during the measurement, as the focus adjustment is fixed and done prior to the scan. The approach published by Navas et al uses a computer simulation to adapt the focus during the measurement [11]. Optimal focus conditions are found by analyzing simulated optical beam-induced current (OBIC) line scans, obtained for different distances between the sample and the focusing objective, in combination with an experimental verification.…”
Section: Introductionmentioning
confidence: 99%
“…To ensure that the LS beam diameter is minimal in the area under investigation, different focusing methods have been published [4]- [11]. With the exception of one method [11], these provide no compensation for geometrical surface changes (e.g., a bent or tilted surface) during the measurement, as the focus adjustment is fixed and done prior to the scan. The approach published by Navas et al uses a computer simulation to adapt the focus during the measurement [11].…”
Section: Introductionmentioning
confidence: 99%
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