TY - JOUR
T1 - Relaxation dynamics of photoexcitations in C60 films
AU - Ishihara, S.
AU - Ikemoto, I.
AU - Suzuki, S.
AU - Kikuchi, K.
AU - Achiba, Y.
AU - Kobayashi, T.
N1 - Funding Information:
The authors thank Dr. S. Takeuchi of the Institute for Molecular Science and Professor M. Yoshizawa of the University of Tohoku for their stimulating discussions. This work was performed by the University of Tokyo and Hitachi, under the management of the Japan High Polymer Center as part of the Industrial Science and Technology Program supported by the New Energy and Industrial Technology Development Organization (NEDO).
PY - 1998/10/23
Y1 - 1998/10/23
N2 - Time-resolved difference absorption spectra of polycrystalline thin films of C60 were measured by femtosecond pump-probe spectroscopy. The decay dynamics of the excited state can be explained in terms of a model of localized excitations. Self-trapped excitons (STEs) are formed after photoexcitation and then converted to polarons. The polarons mainly recombine when they encounter each other after intersite hopping. The decay times of the STEs and polarons are estimated to be 570±120 fs and 54±7 ps, respectively.
AB - Time-resolved difference absorption spectra of polycrystalline thin films of C60 were measured by femtosecond pump-probe spectroscopy. The decay dynamics of the excited state can be explained in terms of a model of localized excitations. Self-trapped excitons (STEs) are formed after photoexcitation and then converted to polarons. The polarons mainly recombine when they encounter each other after intersite hopping. The decay times of the STEs and polarons are estimated to be 570±120 fs and 54±7 ps, respectively.
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U2 - 10.1016/S0009-2614(98)00985-3
DO - 10.1016/S0009-2614(98)00985-3
M3 - Article
AN - SCOPUS:0000432069
SN - 0009-2614
VL - 295
SP - 475
EP - 480
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 5-6
ER -