Quantitative Image Analysis of Fractal‐Like Thin Films of Organic Semiconductors

3区工程技术 Q1 Materials Science Journal of Polymer Science. Part B, Polymer Physics Pub Date : 2019-08-21 DOI:10.26434/chemrxiv.6223610

Weikun Zhu, Erfan Mohammadi, Ying Diao

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引用次数: 12

Abstract

Morphology modulation offers significant control over organic electronic device performance. However, morphology quantification has been rarely carried out via image analysis. In this work, we designed a MATLAB program to evaluate two key parameters describing morphology of small molecule semiconductor thin films: fractal dimension and film coverage. We then use this program in a case study of meniscus‐guided coating of 2,7‐dioctyl[1]benzothieno[3,2‐b][1]benzothiophene (C₈‐BTBT) under various conditions to analyze a diverse and complex morphology set. The evolution of morphology in terms of fractal dimension and film coverage was studied as a function of coating speed. We discovered that combined fractal dimension and film coverage can quantitatively capture the key characteristics of C₈‐BTBT thin film morphology; change of these two parameters further inform morphology transition. Furthermore, fractal dimension could potentially shed light on thin film growth mechanisms. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 1622–1634

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有机半导体类分形薄膜的定量图像分析

形态学调制提供了对有机电子器件性能的重要控制。然而，形态学量化很少通过图像分析进行。在这项工作中，我们设计了一个MATLAB程序来评估描述小分子半导体薄膜形态的两个关键参数:分形维数和薄膜覆盖率。然后，我们使用该程序对2,7 -二辛基[1]苯并噻吩[3,2 - b][1]苯并噻吩(C₈‐BTBT)在不同条件下的半月板引导涂层进行了案例研究，以分析不同和复杂的形貌集。研究了分形维数和膜覆盖率随涂层速度的变化规律。我们发现分形维数和薄膜覆盖率相结合可以定量捕捉C₈‐BTBT薄膜形貌的关键特征;这两个参数的变化进一步为形态转变提供了信息。此外，分形维数可以潜在地揭示薄膜的生长机制。©2019 Wiley期刊公司j .变异较大。科学。B部分:Polym。物理学报，2019,57,1622-1634

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来源期刊

Journal of Polymer Science. Part B, Polymer Physics 工程技术-高分子科学

CiteScore

5.90

自引率

0.00%

发文量

审稿时长

2.1 months

期刊介绍： Since its launch in 1946 by P. M. Doty, H. Mark, and C.C. Price, the Journal of Polymer Science has provided a continuous forum for the dissemination of thoroughly peer-reviewed, fundamental, international research into the preparation and properties of macromolecules. From January 2020, the Journal of Polymer Science, Part A: Polymer Chemistry and Journal of Polymer Science, Part B: Polymer Physics will be published as one journal, the Journal of Polymer Science. The merged journal will reflect the nature of today''s polymer science research, with physics and chemistry of polymer systems at the heart of the scope. You can continue looking forward to an exciting mix of comprehensive reviews, visionary insights, high-impact communications, and full papers that represent the rapid multidisciplinary developments in polymer science. Our editorial team consists of a mix of well-known academic editors and full-time professional editors who ensure fast, professional peer review of your contribution. After publication, our team will work to ensure that your paper receives the recognition it deserves by your peers and the broader scientific community.