Scientists Develop Lead Suction Tape To Improve The Viability Of Rising Stars in The Solar Industry

In a brief exchange with the journal Nature Sustainability on October 28, the scientists described the development of a cost-effective scotch tape-like film that can be applied to PSC and capture 99.9% in the event of solar cell damage Of leaking lead.

As a new type of solar cell, PSC is considered a rising star in the solar field due to its high power conversion efficiency (over 25.5%) and low manufacturing cost. But PSC has not yet been commercialized on a large scale because key challenges still exist, including potential lead toxicity issues.

A small amount of water-soluble lead is still an important part of the high-efficiency PSC light-absorbing layer, and the PSC must be able to withstand harsh weather to achieve commercial viability. Large amounts of lead leakage from damaged batteries can cause health and safety issues.

To solve these problems, scotch tape uses a lead absorber made of a standard solar ethylene vinyl acetate (EVA) film and a pre-laminated layer of lead absorbing material. The tape can be attached to both sides of the manufactured PSC, just like the standard packaging process used in silicon-based solar cells.

In a test used to evaluate the durability of the new technology, the scientists exposed the film-encapsulated PSC to outdoor roof conditions for three months. Then use a razor blade and hammer to damage the solar cells, and then submerge them in water for 7 days. The lead absorption tape shows a lead storage efficiency of more than 99.9%.

"Perovskite solar cells have high hopes for a more sustainable future," Xu said. "This work provides a convenient and industry-friendly method to reduce the potential lead leakage of lead-containing PSCs and promote the future commercialization of perovskite-based photovoltaic technology."

The research was supported by the Office of Energy Efficiency and Renewable Energy under the Office of Energy Technology. In addition to Xu and Zhu, the authors of the Nature Sustainability newsletter are students of Li Xun and Wang Jianxin of the NIU Ph.D. NREL Center for Chemistry and Nanoscience, as well as postdoctoral researchers Zhang Fei and Tong Jinhui.