高性能和环保的有机热电器,通过N型聚烯衍生物实现,具有兴奋剂诱导的分子顺序
Sihui Deng1,2, Yazhuo Kuang1,2, Liyao Liu3
1State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|December 5, 2023
概括
新的n型聚乙烯衍生物,n-PT3和n-PT4,表现出高电导率和出色的兴奋剂可调性. 这些材料实现了显著的功率系数,推进了有机热电应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 有机电子 有机电子
背景情况:
- 开发高性能n型聚合物热电材料对于推进能源采集技术至关重要.
- 现有的n型聚合物经常因兴奋剂挑战而面临导电性的限制.
研究的目的:
- 合成和表征新型酒精溶解的n型聚乙烯衍生物 (n-PT3和n-PT4).
- 为了研究它们在高兴奋剂度下的性能,以改善热电特性.
主要方法:
- 合成n-PT3和n-PT4多衍生物.
- 高兴奋剂负荷实验超过100mol%.
- 电导率,载体度和功率因子测量.
- 使用X射线衍射和其他技术进行结构和形态表征.
主要成果:
- 无论是n-PT3还是n-PT4,都实现了电导率大于100 S cm-1.1.
- 聚合物在高兴奋剂水平下保持稳定的导电性,表现出极好的兴奋剂可调性.
- n-PT4显示出高载体度 (>3.10 × 1020 cm−3),随着兴奋剂使用而增加.
- 兴奋剂改善了n-PT4的晶体结构和结晶性,从而增加了载体的移动性.
- 一个突破性功率系数超过150μW m-1 K-2的DMlmC杂的n-PT4.2获得了.
结论:
- n-PT3和n-PT4对高水平的兴奋剂具有显著的耐受性,克服了n型聚合物导电性的常见限制.
- 独特的结构稳定性和可调节的电子特性使这些聚烯成为高性能有机热电发电机的有希望的候选者.
- 获得的功率系数是n型有机热电材料中报告的最高值之一.
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