Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, P.R. China.
Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstrasse 5, 12489, Berlin, Germany.
Nat Commun. 2020 Jan 21;11(1):310. doi: 10.1038/s41467-019-13910-y.
Regulations currently in force enable to claim that the lead content in perovskite solar cells is low enough to be safe, or no more dangerous, than other electronics also containing lead. However, the actual environmental impact of lead from perovskite is unknown. Here we show that the lead from perovskite leaking into the ground can enter plants, and consequently the food cycle, ten times more effectively than other lead contaminants already present as the result of the human activities. We further demonstrate that replacing lead with tin represents an environmentally-safer option. Our data suggest that we need to treat the lead from perovskite with exceptional care. In particular, we point out that the safety level for lead content in perovskite-based needs to be lower than other lead-containing electronics. We encourage replacing lead completely with more inert metals to deliver safe perovskite technologies.
现行法规使得人们可以声称，钙钛矿太阳能电池中的铅含量低到足以安全，或者其危险性不比其他含有铅的电子产品高。然而，钙钛矿中铅的实际环境影响尚不清楚。在这里，我们表明，从钙钛矿中泄漏到土壤中的铅可以更有效地进入植物，并因此进入食物链，其效率比其他由于人类活动而存在的铅污染物高出十倍。我们进一步证明，用锡替代铅是一种更安全的环境选择。我们的数据表明，我们需要特别小心地处理钙钛矿中的铅。特别是，我们指出，基于钙钛矿的电子产品中铅含量的安全水平需要低于其他含铅电子产品。我们鼓励用更惰性的金属来完全替代铅，以提供安全的钙钛矿技术。
