Direct Evidence of Photoinduced Charge Transfer from Alternating Copolymer to Buckminsterfullerene

Yang, Junlin; Bai, Fenglian; Lin, Hongzhen; Zheng, Min; Zhang, Yueping; Li, Yuliang; Sun, Jian; Liu, Yang; Zhu, Daoben

doi:10.1002/1521-3935(20010601)202:9<1824::aid-macp1824>3.0.co;2-i

Cited by 9 publications

(4 citation statements)

References 11 publications

(16 reference statements)

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“…The intramoleuclar charge-transfer state could contribute to the reduction of the bandgap. In addition, as we proposed previously, a stable charge-transfer state may effectively prevent the electron backdonation after the charge separation from the donor to the acceptor molecules, such as C 60 derivatives [23,24].…”

Section: Introductionmentioning

confidence: 99%

Amorphous molecular material containing bisthiophenyl-benzothiadiazole and triphenylamine with bipolar and low-bandgap characteristics for solar cells

Sun

et al. 2008

Thin Solid Films

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Section: Introductionmentioning

confidence: 99%

Amorphous molecular material containing bisthiophenyl-benzothiadiazole and triphenylamine with bipolar and low-bandgap characteristics for solar cells

Sun

et al. 2008

Thin Solid Films

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“…Interference fluorescence from the solvents was not observed under the experimental conditions. The preparation of C 60 is described elsewhere 14…”

Section: Methodsmentioning

confidence: 99%

Photophysical characteristics of soluble oligo(p‐phenylenevinylene)–fullerene dyad

Yang

Lin

Wang

et al. 2001

J. Polym. Sci. A Polym. Chem.

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The fact that C 60 is a good acceptor has stimulated interest in covalently linked complexes, including polymers and oligomers. Photoinduced charge transfer in these systems has great potential for use in photovoltaic devices. In this study, an alternating conjugated oligomer of alkylated carbazole and dialkoxyl-substituted phenylene, with pendant C 60 moieties, (PPV-AFCAR) was prepared and characterized. The excited-state properties of PPV-AFCAR were investigated with steady-state spectroscopy and lifetime measurements. After photoexcitation, photoinduced energy transfer from the oligomer chain to the pendant moiety occurred in great proportion, but a charge-separation process did not. Whether the energy-transfer process was measurable or not depended on the system temperature. At 77 K, a quantum yield of more than 50% for energy transfer was found by the fitting of a linear combination of the excitation spectra of the precursor oligomer, the alternating conjugated oligomer of alkylated carbazole and dialkoxyl-substituted phenylene PPV-ACAR, and the absorption spectra of C 60 .

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“…However, little evidence concerning the precursor of charge transfer has been proposed in conjugated polymer/ C 60 composites. In our previous report, 6 the composition between TPA-PAV and C 60 was investigated and a fluorescent exciplex was observed. Further charge separation process may occur in the exciplex, which has been proved by ESR experiments.…”

Section: Irreversible Photoinduced Electron Transfer In Tpa-pav/c 60 mentioning

confidence: 99%

Photophysics and Applications in Plastic Solar Cells of Conjugated Polymer/Fullerene Composites

Lin

Huang

et al. 2003

Polymers and Polymer Composites

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The photovoltaic applications of conjugated polymer/fullerene composites have attracted much attention from the scientific community. The photoinduced electron transfer and other related photophysical processes occurred in the composites are the central issues. Several kinds of conjugated polymers have been synthesized in our laboratory. Studies of their composites with fullerene are reviewed. We observed strong fluorescence quenching of these conjugated polymers on mixing them with C60 in dilute solution. Anion radical species of C60 were observed in ESR measurements as a result of photoinduced charge separation. The quenching constants vary with different conjugated polymers and thus provide a quantum measurement for the interaction between the donor and acceptor. Solar cells have been fabricated from these conjugated polymer/fullerene composites. Energy conversion efficiency up to 1.1% has been achieved.

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Direct Evidence of Photoinduced Charge Transfer from Alternating Copolymer to Buckminsterfullerene

Cited by 9 publications

References 11 publications

Amorphous molecular material containing bisthiophenyl-benzothiadiazole and triphenylamine with bipolar and low-bandgap characteristics for solar cells

Amorphous molecular material containing bisthiophenyl-benzothiadiazole and triphenylamine with bipolar and low-bandgap characteristics for solar cells

Photophysical characteristics of soluble oligo(p‐phenylenevinylene)–fullerene dyad

Photophysics and Applications in Plastic Solar Cells of Conjugated Polymer/Fullerene Composites

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