DOI: 10.1063/1.354639. Doping effect of buckminsterfullerene in poly(2,5-dialkoxy-<i>p</i>-phenylene vinylene)

Doping effect of buckminsterfullerene in poly(2,5-dialkoxy-p-phenylene vinylene)

10.1063/1.354639

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Photoluminescence has been markedly quenched and photoconductivity has been enhanced by more than one order of magnitude upon introduction of several mol% of buckminsterfullerene (C60) to poly(2,5-dialkoxy-p-phenylene vinylene) (RO-PPV), especially at excitations about 2.2 eV, corresponding to the band gap energy of RO-PPV and also in bands at 1.8 and 3.5 eV, which correspond to optical excitation of C60 molecules, suggesting that photo-induced charge transfer occurs between RO-PPV and C60. On the other hand, absorption spectrum and electrical conductivity of RO-PPV have been scarcely influenced by doping of small amount of C60, suggesting that the ground state charge transfer between C60 and RO-PPV is not effective, contrary to the case of poly(3-hexylthiophene). These results are discussed by taking relative electronic energy states of RO-PPV and C60 into consideration. The photo-excited exciton-polaron (Ex-P) in RO-PPV is interpreted to migrate along about 100 monomer units along a polymer main chain in its lifetime and dissociates when encountered with C60. These unique doping characteristics of C60 in RO-PPV are not dependent on the alkyl chain length, contrary to the case of poly(3-alkylthiophene).

Bibliography

Morita, S., Kiyomatsu, S., Yin, X. H., Zakhidov, A. A., Noguchi, T., Ohnishi, T., & Yoshino, K. (1993). Doping effect of buckminsterfullerene in poly(2,5-dialkoxy-p-phenylene vinylene). Journal of Applied Physics, 74(4), 2860â2865.

Authors 7

Shigenori Morita (first)
Shinji Kiyomatsu (additional)
Xiao Hong Yin (additional)
Anvar A. Zakhidov (additional)
Takanobu Noguchi (additional)
Toshihiro Ohnishi (additional)
Katsumi Yoshino (additional)

References 29 Referenced 60

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Dates

Type	When
Created	23 years ago (July 26, 2002, 9:46 a.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 6:39 a.m.)
Indexed	2 months ago (June 17, 2025, 9:14 a.m.)
Issued	32 years ago (Aug. 15, 1993)
Published	32 years ago (Aug. 15, 1993)
Published Print	32 years ago (Aug. 15, 1993)

Funders 0

None

BibTeX

@article{Morita_1993, title={Doping effect of buckminsterfullerene in poly(2,5-dialkoxy-p-phenylene vinylene)}, volume={74}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.354639}, DOI={10.1063/1.354639}, number={4}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Morita, Shigenori and Kiyomatsu, Shinji and Yin, Xiao Hong and Zakhidov, Anvar A. and Noguchi, Takanobu and Ohnishi, Toshihiro and Yoshino, Katsumi}, year={1993}, month=aug, pages={2860–2865} }

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