Outstanding high-temperature capacitive performance in all-organic dielectrics enabled by synergistic optimization of molecular traps and aggregation structures.

• Tác giả: Sheng Chen, Ru Guo, Guanghu He, Xiaona Li, Yuan Liu, Hang Luo, Bo Peng, Yuting Wan, Pengbo Wang, Haoran Xie
• Ngôn ngữ: eng
• Ký hiệu phân loại: 271.6 *Passionists and Redemptorists
• Thông tin xuất bản: England : Materials horizons , 2025
• Bộ sưu tập: NCBI
• ID: 160024

Tóm tắt

Improving the high-temperature performance of polymer dielectrics is critical for the development of advanced electrical systems. The deterioration of the capacitive performance of polymer dielectrics at high electric fields and elevated temperatures is attributable to the exponentially increased conduction loss. Herein, a synergistic strategy of molecular trap and aggregation structure optimization is developed to suppress the conduction loss of polymer dielectrics. A molecular semiconductor - HAT-CN with high electron-affinity (EA) and special distribution of electrostatic potential is designed in this work. The theoretical calculation and experimental results show that HAT-CN can introduce electron traps and simultaneously interrupt the conjugation between aromatic rings in molecular chains