Chelating resin encapsulation for reduced Pb leakage in perovskite solar cells

Abstract Although perovskite solar cells have achieved efficiency over 25%, the toxic of Pb content remains severe problem given its commercial prospect. Especially when devices suffer harsh weather, can easily leak out to soil and water. Chelating resins (CRs) exhibit excellent superiority in treating waste water industrial field, since functional groups CRs adsorb divalent metal ion soften purify Herein, an iminodiacetic acid (IDA)‐CR is introduced as encapsulation for first time. The IDA‐CR exhibits high surface area adsorption capability. Qualitative quantitative analysis leakage are studied, with detain 90% compared control without after immersed deionized 12 h even situation or heating. This method provides a new strategy towards environmental biological‐friendly optoelectronic devices. image