A Possibility of 2-Dimensional Transport of Charged Carriers in Columnar Phases of Liquid Crystalline Semiconductors
A Possibility of 2-Dimensional Transport of Charged Carriers in Columnar Phases of Liquid Crystalline Semiconductors
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液晶半导体柱状相中带电载流子二维输运的可能性
DOI：
10.1080/15421406.2011.581162
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
et al
中科院分区：
文献类型：
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作者：
Y.Shimizu;et al
利用飞行时间（TOF）技术研究了1，4，8，11，15，18，22，25-六己基酞菁的载流子迁移率特性。该化合物显示出电荷传输的双极性质，并且空穴和电子的载流子迁移率在六方无序柱状（Colhd）中间相中被确定为0.3和0.2 cm 2 V − 1 s − 1，在晶体中被确定为0.3-1.4和0.4-0.5 cm 2 V − 1 s − 1。这些值是针对多畴膜获得的。从分子结构和晶相有序性两方面讨论了载流子二维输运的可能性。
1,4,8,11,15,18,22,25-hexahexylphthalocyanine was studied on the carrier mobility characteristics by a Time-Of-Flight (TOF) technique. The compound exhibits an ambipolar nature of charge transport and the carrier mobilities for hole and electron were determined to be 0.3 and 0.2 cm2V−1s−1in the hexagonal disordered columnar (Colhd) mesophase and 0.3–1.4 and 0.4–0.5 cm2V−1s−1in the crystal. These values were obtained for poly-domain films. A possibility of 2-dimensional transport of carriers was discussed in terms of the molecular structure and orderings in bothColhdand crystal phases.