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    Title: Comparative study of spectral and morphological properties of blends of P3HT with PCBM and ICBA
    Authors: Lin, You-Heng;Tsai, Yu-Tang;Wu, Chung-Chih;Tsai, Chih-Hung;Chiang, Chien-Hung;Hsu, Hsiu-Fu;Lee, Jey-Jau;Cheng, Ching-Yuan
    Contributors: 淡江大學化學學系
    Keywords: GIXS;Polymer solar cells;Fullerene;Poly(3-hexylthiophene);Morphology
    Date: 2012-11
    Issue Date: 2013-01-16 15:42:18 (UTC+8)
    Publisher: Amsterdam: Elsevier B.V.
    Abstract: We report a comparative study on spectral and morphological properties of two blend systems for polymer solar cells: the donor material poly(3-hexylthiophene) (P3HT) in combination with the acceptor material of either [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) or indene-C60 bisadduct (ICBA) that was reported to enhance efficiencies of polymer solar cells. Optical microscopy and grazing incidence X-ray scattering reveal the stronger tendency of PCBM to from larger and more ordered domains/grains than ICBA either in pure or blend films. Compared to PCBM, the presence of ICBA also substantially perturbs the organization and longer-range ordering of P3HT in increasing the ICBA ratio in blends. With larger and more ordered phase-separated domains, the P3HT/PCBM blend films exhibit significant optical scattering at higher PCBM ratios. Yet, such optical scattering is not significant for P3HT/ICBA blends (even with high ICBA ratios). Overall, results here suggest the reported higher efficiencies of P3HT/ICBA solar cells (vs. P3HT/PCBM cells) cannot be attributed to larger and/or more ordered phase-separated donor–acceptor domains and other characteristics play more important roles in this case.
    Relation: Organic Electronics 13(11), pp.2333-2341
    DOI: 10.1016/j.orgel.2012.07.023
    Appears in Collections:[化學學系暨研究所] 期刊論文

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