Solar energy paper index
Efficient Flexible Monolithic Perovskite/CIGS Tandem Solar Cell by Using Two‐Step Hybrid Deposition Approach
One-line summary
A solar energy research paper on Efficient Flexible Monolithic Perovskite/CIGS Tandem Solar Cell by Using Two‐Step Hybrid Deposition Approach.
Engineering notes
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
ABSTRACT Flexible perovskite/CIGS tandem solar cells offer a promising route toward lightweight, high‐efficiency photovoltaics for emerging applications, yet challenges related to perovskite instability remain critical obstacles. Here, we report a first highly efficient monolithic flexible perovskite/CIGS solar cell fabricated via a two‐step hybrid (co‐evaporation‐solution) process. This method enables conformal and pinhole‐free perovskite films on CIGS by suppressing Zn‐induced degradation through a novel low‐temperature process. Although the reduced process temperature led to suboptimal perovskite microstructure, the introduction of Lewis base additive engineering significantly improved film crystallinity and device performance. The resulting device achieves a PCE of 26.01% (certified PCE of 25.9%) with a record V OC of 1.85 V without employing a NiO x hole transport layer. Extending the same process to a flexible polyimide substrate yields 26.4%. This scalable, NiO x ‐free hybrid strategy establishes a pathway for high‐efficiency, flexible and lightweight photovoltaics.
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