Foreign media: Chinese scientists have developed a new type of organic solar cell, which has achieved a photoelectric conversion efficiency of 18%, and after 1032 hours of wet heat testing (85°C, 85% relative humidity) and 200 thermal cycle tests, it can still maintain 94% of the initial efficiency.
Researchers used temperature-dependent UV-Vis absorption spectroscopy to screen for polymer mixtures with high thermal stability, and inserted a layer of buckminsterfullerene (C60) between the active layer and molybdenum trioxide, effectively suppressing thermally induced interfacial degradation. In addition, they developed two-dimensional planar and edge water vapor diffusion kinetic models, optimized the packaging design, and adopted a hot pressing packaging process based on aluminum foil butyl tape, significantly reducing the lateral diffusion rate of water vapor, effectively preventing water vapor intrusion.
In the future, the team plans to apply this enhanced stability technology to large-area modules, and develop printable film packaging technology to reduce costs.
Original: www.toutiao.com/article/1849212412832780/
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