Lead Isolation and Capture in Perovskite Photovoltaics toward Eco‐Friendly Commercialization

Abstract

Perovskite solar cells (PSCs) have been developed rapidly in efficiency and stability in recent years, which can compete with silicon solar cells. However, an important obstacle to the commercialization of PSCs is the toxicity of lead ions (Pb2+) from water‐soluble perovskites. The entry of free Pb2+ into organisms can will cause severe harm to humans, such as blood lead poisoning, organ failure, etc. Therefore, we report a “lead isolation‐capture” dual detoxification strategy with calcium disodium edetate (EDTA Na‐Ca), which can inhibit lead leakage from PSCs under extreme conditions. More importantly, leaked lead exists in a nontoxic aggregation state chelated by EDTA. For the first time, in vivo experiments were conducted in mice to systematically prove that this material has a significant inhibitory effect on the toxicity of perovskites. In addition, this strategy can further enhance device performance, enabling the optimized devices to achieve an impressive power conversion efficiency (PCE) of 25.19%. This innovative strategy is a major breakthrough in the research on the prevention of lead toxicity in PSCs.This article is protected by copyright. All rights reserved