[Analysis Case] Evaluation of the Mixed State of the Active Layer in Organic Thin-Film Solar Cells
Evaluation of the distribution state of organic materials using low-energy STEM observation and EELS measurement.
By using low-energy STEM observation and STEM-EELS surface analysis, we evaluated the mixed state of the active layer in bulk heterojunction solar cells. For the evaluation, samples were prepared with only the active layer deposited on ITO. The contrast in the low-energy STEM image (Photo 1) corresponds to the elemental distribution of S and C in the STEM-EELS images (Photos 2 and 3), confirming that it reflects the bulk heterostructure. Additionally, a bias in the distribution of S was observed, suggesting that P3HT is segregated towards the surface side.
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Analysis of solar cells.
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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"!