It is possible to non-destructively identify the location of defects in solar cell cells.
When light with energy greater than the bandgap of a solar cell is irradiated, carriers are generated, and some of them undergo radiative recombination. The light emitted during this process is called photoluminescence (PL). However, in areas where defects are present, carriers are trapped, resulting in reduced PL intensity. Therefore, by conducting PL mapping measurements, it is possible to non-destructively and easily identify defect locations. Below is an example of identifying defect locations through PL mapping measurements in multicrystalline silicon solar cell modules.
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Measurement Method: PL Product Field: Solar Cells Analysis Purpose: Structural Evaluation
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MST is a foundation that provides contract analysis services. We possess various analytical instruments such as TEM, SIMS, and XRD to meet your analysis needs. Our knowledgeable sales representatives will propose appropriate analysis plans. We are also available for consultations at your company, of course. We have obtained ISO 9001 and ISO 27001 certifications. Please feel free to consult us for product development, identifying causes of defects, and patent investigations! MST will guide you to solutions for your "troubles"!