Solar cell PL imaging unit POPLI-3C
Solar cell 6-inch cell compatible PL excitation light source. By combining with the EL image inspection device PVX series, PL observation becomes possible.
basic information
Solar cells absorb light to generate electricity, but some of it is released through a phenomenon called luminescence. The method of capturing this light is known as PL (Photoluminescence) observation. POPLI observes the emission wavelength range based on the bandgap. If there are defects, the generated carriers get trapped, resulting in a decrease in luminescence intensity compared to normal areas, and the difference in intensity can be used to identify abnormal regions.
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