具有高电子流动性的可溶性La@C82衍生物的半金属单元晶体
Satoru Sato1, Shu Seki, Yoshihito Honsho
1Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan.
Journal of the American Chemical Society
|February 8, 2011
概括
研究人员开发了一种新型的有机导体晶体,具有异常高的电子流动性,超过10cm(2) V(-1) s(-1). 在有机电子领域的这一突破是使用有序的La@C(82) Ad晶体结构实现的.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 固态物理 固态物理
背景情况:
- 内分体富勒伦,如囊在C82富勒伦 (La@C(82) 中的,是已知的n型半导体.
- 有机导体为灵活和低成本的电子设备提供了潜力.
- 在有机材料中实现高电子流动性仍然是一个重大挑战.
研究的目的:
- 合成和描述一种具有增强电子流动性的新型有机导体晶体.
- 为了研究一个有序的亚达曼利丁 (Ad) 衍生物的电子特性La@C(82).
- 探索单元分子晶体在高性能有机电子产品中的潜力.
主要方法:
- 使用亚达曼利丁 (Ad) 衍生物制备单元有机导体晶体 La@C(82).
- 在环境条件下使用闪光光电解的时间解析微波导电率 (TRMC) 测量电子移动性.
- 密度函数理论 (DFT) 计算以确定电子带结构.
主要成果:
- 单组件La@C(82) Ad晶体在c轴上表现出超过10cm(2) V(-1) s(-1) 的电子流动性.
- 这种移动性是TRMC测量的有机导体中报告的最高值.
- DFT的计算显示,它具有半金属性质,带间距窄,为0.005 eV.
结论:
- 订购的La@C(82) Ad晶体代表了有机导体性能的显著进步.
- 在环境条件下,单元有机晶体的高电子流动性是可以实现的.
- 这种材料对下一代有机电子应用具有前景.
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