Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan.
J Am Chem Soc. 2011 Mar 2;133(8):2766-71. doi: 10.1021/ja110465y. Epub 2011 Feb 4.
We prepared an organic conductor crystal having extremely high electron mobility, in which the adamantylidene (Ad) derivative of La@C(82) (an endohedral metallofullerene known as a n-type semiconductor) is aligned in an orderly fashion. The single-component crystal exhibits high electron mobility of μ > 10 cm(2) V(-1) s(-1) along the c axis under normal temperatures and pressures in the atmosphere, as shown by flash-photolysis time-resolved microwave conductivity (TRMC) measurements, which are the highest of reported organic conductors measured by TRMC. According to density functional calculations, the single crystal of La@C(82)Ad is semi-metallic, with a small band gap of 0.005 eV.
我们制备了一种具有极高电子迁移率的有机导体晶体，其中有序排列着富勒烯 La@C(82)（一种被称为 n 型半导体的内包金属富勒烯）的金刚烷基衍生物（Ad）。通过闪光光解时间分辨微波电导率（TRMC）测量表明，在正常温度和大气压力下，该单晶沿 c 轴表现出超过 10 cm(2) V(-1) s(-1)的高电子迁移率，这是通过 TRMC 测量的报道的有机导体中的最高值。根据密度泛函计算，La@C(82)Ad 单晶是半金属的，带隙仅为 0.005 eV。
