期刊
SOLAR RRL
卷 6, 期 9, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202200332
关键词
indoor photovoltaics; kinetic studies; lead leaching; perovskite solar cells; quantum dots
资金
- National Natural Science Foundation of China [22106021, 61704027]
- Guangdong Basic and Applied Basic Research Foundation [2021A1515012372]
- Research Fund of Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology [2020B1212030010]
- Engineering and Physical Sciences Research Council (EPSRC) [EP/V039717/1]
- Royal Society of Chemistry [E21-9668828170]
Lead halide perovskite solar cells (PSCs) are a promising PV technology that combines high performance with low cost. However, the leaching of lead is a major concern for their large-scale commercialization, and further material optimization is needed to reduce lead leaching.
Lead halide perovskite solar cells (PSCs) have emerged as a highly promising next-generation photovoltaic (PV) technology that combines high device performance with ease of processing and low cost. However, the potential leaching of lead is recognized as a major environmental concern for their large-scale commercialization, especially for application areas with significant overlap with human life. Herein, a quantitative kinetic analysis of the Pb leaching behavior of five types of benchmark PSCs, namely, MAPbI(3), FA(0.)(95)MA(0.)(05)Pb(I0.95Br0.05)(3), Cs-0.(05)(FA(0.)(85)MA(0)(.)(15))(0.)Pb-95(I0.85Br0.15)(3), CsPbI3, and CsPbI2Br, under laboratory rainfall conditions is reported. Strikingly, over 60% of the Pb contained in the unencapsulated perovskite devices is leached within the first 120 s under rainfall exposure, suggesting that very rapid leaching of Pb can occur when indoor and outdoor PV devices are subject to physical damage or failed encapsulation. The initial Pb leaching rate is found to be strongly dependent on the types of PSCs, pointing to a potential route toward Pb leaching reduction through further optimization of their materials design. The findings offer kinetic insights into the Pb leaching behavior of PSCs upon aqueous exposure, highlighting the urgency to develop robust mitigation methods to avoid a potentially catastrophic impact on the environment for their large-scale deployment.
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