AbstractHighly efficient perovskite solar cells typically rely on spiro‐OMeTAD as a hole transporter, achieving a 25.7 % efficiency record. However, these cells are susceptible to harsh 85 °C conditions. Here, we present a peri‐xanthenoxanthene‐based semiconducting homopolymer (p‐TNI2) with matched energy levels and a high molecular weight, synthesized nearly quantitatively through facile oxidative polymerization. Compared to established materials, p‐TNI2 excels in hole mobility, morphology, modulus, and waterproofing. Implementing p‐TNI2 as the hole transport layer results in n‐i‐p perovskite solar cells with an initial average efficiency of 24.6 %, rivaling 24.4 % for the spiro‐OMeTAD control cells under identical conditions. Furthermore, the p‐TNI2‐based cells exhibit enhanced thermostability at 85 °C and operational robustness.
摘要 高效的过氧化物太阳能电池通常依靠螺-OMeTAD 作为空穴传输器,其效率达到 25.7%。然而,这些电池容易受到 85 °C 苛刻条件的影响。在这里,我们介绍了一种基于过呫吨氧呫吨的半导体均聚物(p-TNI2),它具有匹配的能级和高分子量,通过简单的氧化聚合几乎可以定量合成。与现有材料相比,p-TNI2 在空穴迁移率、形貌、模量和防水性方面表现出色。采用 p-TNI2 作为空穴传输层,n-i-p 包光体太阳能电池的初始平均效率为 24.6%,与相同条件下螺-OMeTAD 对照电池的 24.4% 不相上下。此外,基于 p-TNI2 的电池在 85 ℃ 下具有更强的热稳定性和运行稳定性。