Lead-Free Perovskite Solar Cells

Widely considered as the ‘next big thing’ in affordable and efficient photovoltaicsPhotovoltaics, the family of lead halide perovskitesLead halide perovskites has demonstrated an unprecedented pace of development over the last decade and is currently poised at the critical juncture towards commercializationCommercialization. However, concerns related to lead toxicityToxicity and its adverse impact on humans have brought about the need to explore alternativeLead-free perovskites lead-free perovskite materialsPerovskite materials without sacrificing device performance. This chapter provides a comprehensive and up-to-date account of the various isovalent and heterovalent substitutes to lead which have attracted significant attention in recent years, summarizes their key structural and optoelectronic properties, and traces their evolution as absorber materials in solar cellsSolar cell. Furthermore, the scientific and technological roadblocks impeding the rapid progress of these lead-free perovskitesLead-free perovskites are extensively discussed and some potential solutions proposed. In light of the current state-of-the-art in these emerging perovskitePerovskites and perovskite-inspired materials, systematic experimental and computational investigations are strongly recommended for unlocking exciting prospects for lead-free perovskiteLead-free perovskites photovoltaicsPhotovoltaics.