Abstract
Perovskite solar cells (PSCs) have rapidly advanced as a promising new photovoltaic generation technology. In a decade, a remarkable power conversion efficiency of 26% was achieved, comparable to silicon-based traditional solar cells. However, their stability and sustainability still need to be improved before commercialization. The potential replacement of some of the inorganic components in the PSCs with organic ones could address these concerns as the organic components may offer the advantages of being biodegradable, low cost, and easily processed, with the potential of protecting the perovskite from the ambient environment. Thus, this review focuses on the recent developments in organic electron and hole materials, ETMs and HTMs, respectively. Additionally, machine-learning insights and perspectives for future research directions are proposed for the advancements of PSCs.
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