Liquid crystalline thin films as a precursor for polycrystalline thin films aimed at field effect transistors
Liquid crystalline thin films as a precursor for polycrystalline thin films aimed at field effect transistors
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DOI：
10.1063/1.3563586
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发表时间：
2011-04-01
影响因子：
3.2
通讯作者：
Hanna, Jun-ichi
中科院分区：
文献类型：
--
作者：
Iino, Hiroaki;Hanna, Jun-ichi
我们已经研究了液晶薄膜的可用性，作为通过溶液过程（OFET）（OFET）的质量多晶薄膜的前体。在各种温度下进行自旋涂层的实验证明，在室温下产生的多晶薄膜的形态在很大程度上取决于在这些温度下自旋涂层和溶剂蒸发后立即发生的膜，即晶体，液晶或异型液体或异位液体液体。由于许多小的晶体片和液滴，在温度下旋转的多晶膜被旋转了。另一方面，在液晶温度下旋转的薄膜在整个区域非常均匀，并且显示高的FET迁移率在设备之间具有很小的变化。 （c）2011年美国物理研究所。 [doi：10.1063/1.3563586]
We have investigated the availability of liquid crystalline thin films as a precursor of quality polycrystalline thin films for organic field effect transistors (OFETs) by solution process. The experiments of spin-coating at various temperatures proved that the morphology of resulting polycrystalline thin films at room temperature strongly depend on what the films immediately after spin-coating and solvent evaporation at those temperatures were, i.e., crystal, liquid crystal, or isotropic liquid. The polycrystalline films spin-coated at the temperatures for crystal and isotropic liquid phases were much roughened owing to many small crystal flakes and droplets. On the other hand, the thin films spin-coated at liquid crystal temperatures were very uniform in a whole area and showed high FET mobility having a small variation from device to device. (C) 2011 American Institute of Physics. [doi:10.1063/1.3563586]