Affiliation:
1. State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Chemistry Zhejiang University Hangzhou 310058 China
2. Flinders Institute for NanoScale Science and Technology Flinders University Bedford Park, South Australia 5042 Australia
Abstract
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.
Funder
National Natural Science Foundation of China
Ministry of Science and Technology of the People's Republic of China
Science and Technology Program of Hunan Province
Australian Research Council
Subject
General Chemistry,Catalysis
Cited by
8 articles.
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