Raman study on a bulk-heterojunction film of pentacene and C<inf>60</inf>

Yasuhiro Iwasawa, Yukio Furukawa

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    We measured the 785-nm excited Raman spectrum of a pentacene:C<inf>60</inf> blend film. The 1462-, 492-, and 268-cm<sup>-1</sup> bands of C<inf>60</inf> showed broadening in bandwidth and downward shifts in peak wavenumbers, whereas such broadening and downward shifts were not observed for pentacene. These results indicate that there are pentacene crystallites among the amorphous C<inf>60</inf>. The intensity ratio of the 1598-cm<sup>-1</sup> (B<inf>3g</inf>) and the 1534-cm<sup>-1</sup> (A<inf>g</inf>) bands indicates that pentacene molecules have standing orientations. The appearance of a 514-cm<sup>-1</sup> band (F<inf>1u</inf>) and the splitting of the H<inf>g</inf> bands of C<inf>60</inf> indicate symmetry lowering induced by the interaction between pentacene and C<inf>60</inf> molecules.

    元の言語English
    ページ(範囲)58-61
    ページ数4
    ジャーナルChemical Physics Letters
    636
    DOI
    出版物ステータスPublished - 2015 7 30

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Physics and Astronomy(all)

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