https://scholars.lib.ntu.edu.tw/handle/123456789/432827
Title: | Dependence of nanocrystal dimensionality on the polymer nanomorphology, anisotropic optical absorption, and carrier transport in P3HT:TiO2 bulk heterojunctions | Authors: | Lin C.-C. Ho P.-H. Huang C.-L. Du C.-H. Yu C.-C. Chen H.-L. Yeh Y.-C. Li S.-S. Lee C.-K. Pao C.-W. Chang C.-P. Chu M.-W. CHUN-WEI CHEN HSUEN-LI CHEN Chu, M.-W. |
Issue Date: | 2012 | Journal Volume: | 116 | Journal Issue: | 47 | Start page/Pages: | 25081-25088 | Source: | Journal of Physical Chemistry C | 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). © 2012 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870457896&doi=10.1021%2fjp306921e&partnerID=40&md5=340171fa021b0921d85ab6840474e19e https://scholars.lib.ntu.edu.tw/handle/123456789/432827 |
ISSN: | 19327447 | DOI: | 10.1021/jp306921e | SDG/Keyword: | Bulk heterojunction; Carrier generation; Device performance; Electron tomography; Electronic device; Film substrates; Grazing-incidence X-ray diffraction; Multiscales; Nano scale; Nanomorphologies; Nanoscale morphology; Organic/Inorganic hybrids; Photovoltaics; Polymer morphology; Synchrotron x rays; Thin-film transistor (TFTs); TiO; Transport behavior; Anisotropy; Computer simulation; Electric impedance tomography; Light absorption; Molecular dynamics; Morphology; Nanocrystals; Nanorods; Nanotechnology; Thin film transistors; Titanium dioxide; X ray diffraction; Heterojunctions |
Appears in Collections: | 材料科學與工程學系 |
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