Perovskite CsPbBr 3 quantum dots prepared using discarded lead-acid battery recycled waste

Abstract

Perovskite CsPbBr 3 quantum dot (CsPbBr 3 -QD) recovery was performed using lead scrap from lead storage batteries. The perovskite CsPbBr 3 -QD characteristics were analyzed using different PbO/recycled PbO2 ratios. Scanning electron microscopy (SEM) was used to observe the film surface morphology and cross-section. High-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) were used to observe the perovskite CsPbBr 3 -QDs' structural characteristics. A photoluminescence (PL) measurement system was used to analyze the optical properties. The results show that lead scrap from lead-acid batteries as a material for perovskite CsPbBr 3 -QD production can be successfully synthesized. This saves material and also proves that recycling is valuable. The proposed approach is helpful for future material shortages and materials not easily accessible. Although the efficiency is not very high, this process will be purified using recycled lead in the future to achieve higher quantum yield.