Temperature stability of the pentacene thin-film phase
Temperature stability of the pentacene thin-film phase
复制标题
DOI：
10.1063/1.3665188
复制
发表时间：
2011-11-28
影响因子：
4
通讯作者：
Resel, Roland
中科院分区：
文献类型：
--
作者：
Moser, Armin;Novak, Jiri;Resel, Roland
本文研究了300 K以上的温度对并五苯薄膜晶体结构和形貌的影响。通过掠入射X射线衍射研究了晶胞的热膨胀和不同相的相对量。关于薄膜相的特定分子堆积的几何考虑解释了各向异性非线性膨胀。此外，在480 K附近，观察到薄膜相到体相的相变。相比之下，温度对薄膜相微晶的高度分布的影响很小。（C）2011年美国物理研究所。[doi：10.1063/1.3665188]
This work presents the influence of temperatures above 300 K on the crystal structure and morphology of pentacene thin films. The thermal expansion of the unit cell and the relative amount of different phases are investigated via grazing incidence x-ray diffraction. Geometrical considerations about the specific molecular packing of the thin-film phase explain the anisotropic non-linear expansion. Furthermore, around 480 K, a phase transformation of the thin-film phase to the bulk phase is observed. In contrast, only a weak influence of the temperature on the height distribution of the thin-film phase crystallites is found. (C) 2011 American Institute of Physics. [doi:10.1063/1.3665188]