高性能n型有机热电器通过协同实现高电子流动性和兴奋剂效率来实现
Kui Feng1,2, Junwei Wang1, Sang Young Jeong3
1Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 9, 2023
概括
研究人员开发了用于有机热电材料 (OTE) 的新型n-doped聚合物. 聚合物PO12具有高电导率和功率系数,证明了效率高的有机热电发电机的侧链调.
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:
- 在n-doped聚合物中,高电导率 (σ) 对于高效的有机热电发生器 (OTE) 是至关重要的.
- 这些材料的稀缺性阻碍了OTE的发展.
研究的目的:
- 为了合成和表征新型的化比西奥胺二元基聚合物.
- 为了研究甲基 (乙烯基醇) 侧链长度对电导率和热电性能的影响.
- 为增强有机热电应用优化聚合物结构.
主要方法:
- 合成一个具有不同侧链长度的聚合物系列 (PO8,PO12,PO16).
- 有机热电设备的制造.
- 电导率和功率因子的测量.
- 使用X射线衍射和其他技术进行形态学研究.
主要成果:
- 电导率随着侧链长度的增加而单调地降低,这是由于晶体性降低和骨干方向改变而导致的.
- 聚合物PO12,具有适度的侧链,实现了92.0 S cm-1的冠军导电性和94.3 μW m-2 K-2.2的功率因子.
- PO12表现出高的兴奋剂效率和电荷载体流动性,归因于中等晶度和双模方向的3D导电通道.
结论:
- 简单的侧链调是开发高性能n-doped聚合物用于OTE的强大策略.
- 聚合物PO12在溶液加工有机热电应用方面具有显著的潜力.
- 优化形态,包括结晶性和电荷传输通路,是实现高热电性能的关键.
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