Bioinspired scaffolds that sequester lead ions in physically damaged high efficiency perovskite solar cells

Abstract

Hydroxyapatite nanoparticles (HAP NPs) are blended with TiO2NPs to prepare mixed mesoporous scaffolds which are used to prepare high efficiency perovskite solar cells (PSCs) with a best power conversion efficiency (PCE) of 20.98%. HAP not only increases the PCE but also limits the concentration of Pb released in water from intentionally broken PSCs by ion sequestration thereby potentially offering a promising in-device fail-safe system.