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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Correlation between morphology and local thermal properties of iron (II) phthalocyanine thin layers
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Correlation between morphology and local thermal properties of iron (II) phthalocyanine thin layers

机译:铁(II)酞菁薄层的形貌与局部热学性质的关系

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摘要

The effect of substrate temperature and post-deposition annealing temperature on the surface morphology, topography and local thermal properties of iron(II) phthalocyanine (FePc) 500 nm thick films was investigated. The investigations were conducted by a combination of scanning probe microscopies (atomic force microscopy, scanning thermal microscopy) and scanning electron microscopy with structural (x-ray diffraction) and chemical (energy-dispersive x-ray spectroscopy) analysis. FePc is always obtained in its α-form. While for heated substrates, FePc crystallites lie flat on the surface, so post-deposition annealing leads to vertically oriented crystallites. The total surface area obtained does not depend significantly on the substrate temperature, while it is strongly dependent on the annealing temperature. For both groups of samples, the increase of roughness was accompanied by a decrease of the sample's thermal resistivity, which is in agreement with the picture of a decreased number of grain boundaries resulting in higher heat transport. The results obtained here show that the exposed surface area of an organic film strongly depends on the thermal treatments; hence surface morphology can be tailored to particular needs.
机译:研究了基底温度和沉积后退火温度对500 nm厚的酞菁铁(FePc)铁的表面形貌,形貌和局部热性能的影响。通过将扫描探针显微镜(原子力显微镜,扫描热显微镜)和扫描电子显微镜与结构(X射线衍射)和化学(能量色散X射线光谱)分析相结合进行研究。 FePc始终以其α形式获得。对于加热的基材,FePc晶粒平放在表面,因此沉积后退火会导致垂直取向的晶粒。所获得的总表面积与衬底温度无关,而与退火温度密切相关。对于两组样品,粗糙度的增加都伴随着样品热阻的降低,这与减少晶界数量导致更高的热传递的图片一致。此处获得的结果表明,有机膜的暴露表面积在很大程度上取决于热处理。因此,可以根据特定需要定制表面形态。

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