This article explores the potential of chalcogenide perovskites, specifically BaZrS3 (BZS), as a revolutionary material in solar technology. Traditional silicon-based solar cells are nearing their efficiency limits, and while halide perovskites have shown remarkable efficiency improvements, their toxicity and instability hinder widespread adoption. BZS emerges as a promising alternative due to its stability, non-toxicity, and favorable properties for solar cells. Researchers at the Australian Center for Advanced Photovoltaics enhanced BZS’s weak ferroelectricity by applying strain, creating properties similar to halide perovskites. Their proposed design involves stacking ultrathin BZS layers, potentially achieving efficiency levels beyond 38% when paired with silicon. Despite its promise, challenges in producing uncontaminated BZS due to its sensitivity to oxygen remain significant. With further advancements, BZS could pave the way for more sustainable and efficient solar power technologies.
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