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首页> 外文期刊>Advanced Functional Materials >High-Resolution Spectroscopic Mapping of the Chemical Contrast from Nanometer Domains in P3HT:PCBM Organic Blend Films for Solar-Cell Applications
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High-Resolution Spectroscopic Mapping of the Chemical Contrast from Nanometer Domains in P3HT:PCBM Organic Blend Films for Solar-Cell Applications

机译：用于太阳能电池应用的P3HT：PCBM有机共混膜中纳米域化学对比度的高分辨率光谱图

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摘要

A high-resolution near-field spectroscopic mapping technique is successfully applied to investigate the influence of thermal annealing on the morphology of a poly(3-hexylthiophene) and [6,6]-penyl-C_(61) butyric acid methyl ester (P3HT:PCBM) blend film. Based on the simultaneously recorded morphological and spectroscopic information, the interplay among the blend film morphology, the local P3HT:PCBM molecular distribution, and the P3HT photoluminescence (PL) quenching efficiency are systematically discussed. The PL and Raman signals of the electron donor (P3HT) and acceptor (PCBM) are probed at an optical resolution of approximately 10 nm, which allows the chemical nature of the different domains to be identified directly. In addition, the local PL quenching efficiency, which is related to the electron transfer from P3HT to PCBM, is quantitatively revealed. From these experimental results, it is proposed that high-resolution near-field spectroscopic imaging is capable of mapping the local chemical composition and photophysics of the P3HT:PCBM blends on a scale of a few nanometers.
机译：高分辨率近场光谱映射技术已成功应用于研究热退火对聚（3-己基噻吩）和[6,6]-苯基-C_（61）丁酸甲酯（P3HT）形态的影响：PCBM）混合膜。基于同时记录的形态学和光谱学信息，系统地讨论了共混膜形态，局部P3HT：PCBM分子分布和P3HT光致发光（PL）猝灭效率之间的相互作用。电子供体（P3HT）和受体（PCBM）的PL和拉曼信号以大约10 nm的光学分辨率进行探测，这可以直接识别不同域的化学性质。此外，定量揭示了局部PL猝灭效率，该效率与电子从P3HT转移到PCBM有关。根据这些实验结果，建议高分辨率近场光谱成像能够在几纳米的尺度上绘制P3HT：PCBM共混物的局部化学成分和光物理分布图。

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  • 来源
    《Advanced Functional Materials》 |2010年第3期|492-499|共8页
  • 作者

    Xiao Wang; Dai Zhang; Kai Braun; Hans-Joachim Egelhaaf; Christoph J. Brabec; Alfred J. Meixner;

  • 作者单位

    Institute of Physical and Theoretical Chemistry University of Tuebingen Auf der Morgenstelle 8, 72076 Tuebingen (Germany);

    Institute of Physical and Theoretical Chemistry University of Tuebingen Auf der Morgenstelle 8, 72076 Tuebingen (Germany);

    Institute of Physical and Theoretical Chemistry University of Tuebingen Auf der Morgenstelle 8, 72076 Tuebingen (Germany);

    Konarka Technologies GmbH Landgrabenstr. 94, 90443 Nurnberg (Germany);

    Konarka Technologies GmbH Landgrabenstr. 94, 90443 Nurnberg (Germany) Lehrstuhl fuer Werkstoffe der Elektronik- und Energietechnik Friedrich-Alexander-Universitaet Erlangen-Nuern berg Martensstrasse 7, 91058 Erlangen (Germany) Bayerisches Zentrum fuer Angewandte Energieforschung (ZAE Bayern) Martensstrasse 7, 91058 Erlangen (Germany);

    Institute of Physical and Theoretical Chemistry University of Tuebingen Auf der Morgenstelle 8, 72076 Tuebingen (Germany);

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