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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/80401

    Title: Dependence of Nanocrystal Dimensionality on the Polymer Nanomorphology, Anisotropic Optical Absorption, and Carrier Transport in P3HT:TiO2 Bulk Heterojunctions
    Authors: Lin, Chih-Cheng;Ho, Po-Hsun;Huang, Chi-Liang;Du, Chao-Hung;Yu, Chen-Chieh;Chen, Hsuen-Li;Yeh, Yun-Chieh;Li, Shao-Sian;Lee, Cheng-Kuang;Pao, Chun-Wei;Chang, Ching-Pin;Chu, Ming-Wen;Chen, Chun-Wei
    Contributors: 淡江大學物理學系
    Date: 2012-11-05
    Issue Date: 2013-01-23 16:34:33 (UTC+8)
    Publisher: Washington, DC: American Chemical Society
    Abstract: It is known that the nanoscale morphological organization of donors or acceptors in bulk heterojunction (BHJ) solar cells is critical to device performance and strongly affects carrier generation, transporting, and collection. This work demonstrates the dependence of nanocrystal dimensionality and organization on the polymer nanomorphology in P3HT:TiO2 hybrid bulk heterojunctions, which were revealed using grazing-incidence X-ray diffraction (GIXRD) using a synchrotron X-ray beam and electron tomography. We further performed a multiscale molecular dynamic simulation to understand the morphological orientation of a polymer blended with TiO2 nanoparticles (NPs) or nanorods (NRs). The correlation between polymer nanoscale morphology and the dimensionality and anisotropy of nanocrystals in P3HT:TiO2 hybrids clearly explains the observation of different optical absorption and carrier transport behaviors in directions perpendicular or parallel to the film substrate. Our results provide crucial information toward understanding the interplay between nanocrystal dimensionality and polymer morphology in developing organic/inorganic hybrid electronic devices such as thin film transistors (TFTs) or photovoltaics (PVs).
    Relation: The Journal of Physical Chemistry C 116(47), pp.25081–25088
    DOI: 10.1021/jp306921e
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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