高性能n型有机热电器,通过调节蓝色功能化的聚烯脊柱来实现
Junwei Wang1, Suxiang Ma1, Sang Young Jeong2
1Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China. fengk@sustech.edu.cn.
Faraday discussions
|November 15, 2023
概括
研究人员开发了用于有机热电 (OTE) 的新型n型聚合物. 聚合物CNg4T2-CNT2实现了创纪录的功率系数,克服了OTE应用电导率方面的挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 热电学是一种热电学.
背景情况:
- N型聚合物对于有机热电材料 (OTEs) 至关重要,但实现高电导率和功率因子仍然是一个挑战.
- 缺乏电子的构件是开发高性能n型OTE材料的关键.
研究的目的:
- 为提高有机热电性能合成新型n型聚乙烯衍生物.
- 研究影响这些新聚合物电导率和功率因子的结构-性质关系.
主要方法:
- 合成了一种新的缺电子构件,CNg4T2,结合了蓝色功能和内分子形状锁.
- 使用CNg4T2与不同的联合单位开发了两种n型聚乙烯衍生物 (CNg4T2-2FT和CNg4T2-CNT2).
- 聚合物性质的表征,包括最低的未占用分子轨道 (LUMO) 水平,脊柱共平面性,电导率 (σ) 和功率因子 (PF).
主要成果:
- 与CNg4T2-2FT相比,CNg4T2-CNT2表现出更深的LUMO,并保持了脊柱共平面性.
- 用N-DMBI合的CNg4T2-CNT2薄膜获得了13.2 S cm-1的高电导率和10.84 μW m-1 K-2.2的功率系数.
- 获得的功率因子是OTEs中n型聚二报告的最高值,超过了基准.
结论:
- CNg4T2是高性能n型OTE聚合物的有前途的构建模块.
- 微调聚合物骨干结构是开发先进的n型OTE材料的有效策略.
- 高兴奋剂效率和有序的聚合物链包装有助于CNg4T2-CNT2.2.的卓越性能.
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