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Numerical investigation of bilayer perovskite solar cells using graphene hole transport layers, highlighting improved efficiency.
) of 1.025 V and a maximum PCE of 17.79%. These results demonstrate that the synergistic integration of a bilayer perovskite absorber and graphene-enhanced HTLs provides an effective strategy for improving PSC performance while maintaining a single-junction device architecture.
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Dadashbeik et al. (2026) studied this question.
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