On the 17th, Japanese media reported that a research team from Osaka University has made a breakthrough in solar technology by developing a paper-based solar battery. This innovative device is significantly cheaper to produce, with manufacturing costs only one-tenth of traditional solar cells.
The paper solar cell combines wood pulp, silver wiring, and organic materials. Unlike conventional glass-based solar panels, this new design is flexible, foldable, and easier to process, making it more versatile for various applications.
Thanks to the fine wood pulp fibers—only one-third the thickness of traditional materials—it's possible to create a transparent paper sheet. The power-generating organic material and conductive silver wiring are then printed onto the paper using high-temperature printing techniques, which simplifies the production process.
Tests have shown that the battery can power a small lamp, though its light-to-electricity conversion efficiency is currently around 3%, much lower than existing solar technologies. However, when compared to other similar solar panels, its efficiency is comparable, suggesting there's room for improvement.
According to estimates, the cost of producing this paper-based solar cell is just one ten-thousandth of that of glass panels and between one-fifth to one-tenth of plastic-based alternatives. Additionally, the manufacturing process is more energy-efficient and eco-friendly, making it a promising candidate for future commercial use. Researchers believe it could be widely adopted within the next few years.
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