The development of highly ordered and uniformly covered self-assembly monolayers (SAMs) on textured silicon substrates is essential for boosting the efficiency of perovskite/silicon tandem solar cells (TSCs). An innovative asymmetric SAM, designated as HTL201, incorporates an anchoring group and a spacer surrounding a carbazole core, enabling it to function effectively as a hole selective layer (HSL). This design surpasses that of traditional symmetric SAMs containing nitrogen-bonded phosphonic acid groups in terms of performance, highlighting its capability to further optimize the efficiency of TSCs through enhanced interface compatibility and packing configurations.
Achieving highly ordered and uniformly covered self-assembly monolayers (SAMs) with optimal packing configuration on textured silicon substrates remains a critical challenge for further improving the efficiency of perovskite/silicon tandem solar cells.
We design an asymmetric SAM featuring anchoring group and spacer flanking a carbazole core, serving as a hole selective layer (HSL) for perovskite/silicon TSCs.
Compared to symmetric SAMs with nitrogen-bonded phosphonic acid group, our asymmetric SAM shows improved performance characteristics, demonstrating its potential in enhancing tandem solar cell efficiency.
The innovation in SAM design plays a crucial role in optimizing the interface compatibility between the perovskite layer and silicon substrates, thereby boosting overall device performance.
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