Spontaneous aggregation of pentacene molecules and its influence on field effect mobility
Spontaneous aggregation of pentacene molecules and its influence on field effect mobility
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DOI：
10.1063/1.2749721
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发表时间：
2007-06
影响因子：
4
通讯作者：
Genki Yoshikawa;J. Sadowski;A. Al‐Mahboob;Y. Fujikawa;T. Sakurai;Y. Tsuruma;S. Ikeda;K. Saiki
中科院分区：
文献类型：
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作者：
Genki Yoshikawa;J. Sadowski;A. Al‐Mahboob;Y. Fujikawa;T. Sakurai;Y. Tsuruma;S. Ikeda;K. Saiki
作者发现，沉积在SiO2基底上的并五苯分子经过自组装单分子层（如六甲基二硅氮烷或十八烷基三氯硅烷）处理后会自发聚集。在原位，实时低能量电子显微镜研究的形态变化，并五苯薄膜沉积在真空下揭示并五苯薄膜和基板表面能之间的平衡是这种聚集的起源。通过原位原子力显微镜-场效应晶体管测量，作者证明了场效应迁移率受到这种聚集的严重影响。
The authors have found that pentacene molecules deposited on SiO2 substrates treated with self-assembled monolayers, such as hexamethyldisilazane or octadecyltrichlorosilane, aggregate spontaneously. In situ, real-time low-energy electron microscopy investigation of the morpho-logical changes in pentacene films deposited under ultrahigh vacuum reveals that the balance between pentacene film and substrate surface energies is an origin of this aggregation. With in situ atomic force microscopy - field effect transistor measurements, the authors demonstrate that field effect mobility is critically affected by this aggregation.