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This study investigates the degradation of monolithic perovskite/silicon tandem solar cells under reverse-bias stress conditions, a common operational challenge that can cause localized overheating and device failure. The researchers developed graded dielectric interlayers designed to redistribute the electric field within the tandem device architecture, thereby reducing the vulnerability of the perovskite subcell to reverse-bias-induced damage. Their results demonstrate that the incorporation of these graded layers significantly improves the stability and resilience of the tandem cells under stress conditions without substantially compromising overall photovoltaic performance.
Why it matters
Perovskite/silicon tandem solar cells are among the most promising next-generation photovoltaic technologies due to their high theoretical efficiency limits, and solving reverse-bias instability is a critical step toward their commercial deployment in real-world solar panel arrays where partial shading routinely induces reverse-bias conditions.
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