Fluorinated carbon nanotubes as nonvolatile additive to the active layer of polymer/fullerene solar cells

Kobeleva, Elena S.; Uvarov, Mikhail N.; Kravets, N. V.; Пономарев, С. А.; Gurova, Olga A.; Окотруб, А. В.; Kazantzev, M. S.; Degtyarenko, K. M.; Кулик, Л. В.

doi:10.1080/1536383x.2023.2179618

Cited by 6 publications

(5 citation statements)

References 51 publications

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“…The LUMO energy, evaluated from the potential of the onset of reduction, was approximately −4.32 eV. This value is close to the LUMO energy level of fluorinated SWCNT [28]. From the SEM image of MW0 (Figure 2a) the characteristic range of the nanotube diameter 20-80 nm in the arrays can be deduced.…”

Section: Characterization Of Fluorinated Mwcntssupporting

confidence: 61%

“…This allows to suggest that added F-MWCNTs do not participate in charge transfer themselves. Instead, addition of F-MWCNT can optimize the morphology of the active layer, which leads to an improvement in the characteristics of the devices, similarly to fluorinated SWCNT [28]. The effective charge mobility was measured in OPV based on pristine composite PCDTBT/PC60BM and composites, doped by 2%, 1%, 0.5%, and 0.25% F-MWCNTs of the polymer mass.…”

Section: Effect Of Fluorinated Mwcnts Additive On Opv Device Performancementioning

confidence: 99%

“…This allows to suggest that added F-MWCNTs do not participate in charge transfer themselves. Instead, addition of F-MWCNT can optimize the morphology of the active layer, which leads to an improvement in the characteristics of the devices, similarly to fluorinated SWCNT [28]. PCDTBT/PC 60 BM/F-MWCNTs 2% 2.9 5.4 × 10 −5…”

Section: Effect Of Fluorinated Mwcnts Additive On Opv Device Performancementioning

confidence: 99%

“…The second strategy involves chemical functionalization of CNTs, which converts metallic CNTs into semiconducting ones [27]. Fluorination is a straightforward and relatively simple method of covalent functionalization of CNTs [28]. For multi-walled CNTs, physical separation of metallic and semiconducting CNTs is impossible because SWCNTs of both types usually coexist inside one MWCNT.…”

Section: Introductionmentioning

confidence: 99%

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Ternary Composite of Polymer, Fullerene and Fluorinated Multi-Walled Carbon Nanotubes as the Active Layer of Organic Solar Cells

Kobeleva,

Uvarov,

Kravets

et al. 2023

J. Compos. Sci.

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Fluorinated multi-walled carbon nanotubes are implemented as the third component of the active layer of organic solar cells. The addition of approximately 1% weight fraction of these nanotubes into PCDTBT/PC60BM polymer/fullerene active layer leads to a noticeable increase in the main photovoltaic parameters of the solar cells, including their stability. Presumably, the origins of this influence are optimizing the donor/acceptor composite morphology and reinforcing its structure with fluorinated multi-walled carbon nanotubes. This hypothesis is supported by the dramatic influence of the fluorinated multi-walled carbon nanotube additive on the kinetics of the decay of the EPR signal of light-induced charges in the PCDTBT/PC60BM composite.

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Section: Characterization Of Fluorinated Mwcntssupporting

confidence: 61%

Section: Effect Of Fluorinated Mwcnts Additive On Opv Device Performancementioning

confidence: 99%

“…This allows to suggest that added F-MWCNTs do not participate in charge transfer themselves. Instead, addition of F-MWCNT can optimize the morphology of the active layer, which leads to an improvement in the characteristics of the devices, similarly to fluorinated SWCNT [28]. PCDTBT/PC 60 BM/F-MWCNTs 2% 2.9 5.4 × 10 −5…”

Section: Effect Of Fluorinated Mwcnts Additive On Opv Device Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ternary Composite of Polymer, Fullerene and Fluorinated Multi-Walled Carbon Nanotubes as the Active Layer of Organic Solar Cells

Kobeleva,

Uvarov,

Kravets

et al. 2023

J. Compos. Sci.

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show abstract

“…This brings into question the successful application of single-walled SWCNTs as the acceptor component of the active layer of OPV devices. On the other hand, they can be successfully applied for modifying the morphology of polymer/fullerene active layer [ 54 , 55 ]. In view of the present results, this seems to be the more promising direction of use for SWCNT additives to donor/acceptor OPV composites.…”

Section: Discussionmentioning

confidence: 99%

Fast Recombination of Charge-Transfer State in Organic Photovoltaic Composite of P3HT and Semiconducting Carbon Nanotubes Is the Reason for Its Poor Photovoltaic Performance

Uvarov

Kobeleva

Degtyarenko

et al. 2023

IJMS

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Although the photovoltaic performance of the composite of poly-3-hexylthiophene (P3HT) with semiconducting single-walled carbon nanotubes (s-SWCNT) is promising, the short-circuit current density jSC is much lower than that for typical polymer/fullerene composites. Out-of-phase electron spin echo (ESE) technique with laser excitation of the P3HT/s-SWCNT composite was used to clarify the origin of the poor photogeneration of free charges. The appearance of out-of-phase ESE signal is a solid proof that the charge-transfer state of P3HT+/s-SWCNT− is formed upon photoexcitation and the electron spins of P3HT+ and s-SWCNT− are correlated. No out-of-phase ESE signal was detected in the same experiment with pristine P3HT film. The out-of-phase ESE envelope modulation trace for P3HT/s-SWCNT composite was close to that for the polymer/fullerene photovoltaic composite PCDTBT/PC70BM, which implies a similar distance of initial charge separation in the range 2–4 nm. However, out-of-phase ESE signal decay with delay after laser flash increase for P3HT/s-SWCNT composite was much faster, with a characteristic time of 10 µs at 30 K. This points to the higher geminate recombination rate for the P3HT/s-SWCNT composite, which may be one of the reasons for the relatively poor photovoltaic performance of this system.

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Tetraazapyrene Functionalized Nitroxide Radical as Self-Deposited Functional Interlayer in Organic Solar Cells

Uvarov,

Baranov,

Nevostruev

et al. 2023

Appl Magn Reson

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Fluorinated carbon nanotubes as nonvolatile additive to the active layer of polymer/fullerene solar cells

Cited by 6 publications

References 51 publications

Ternary Composite of Polymer, Fullerene and Fluorinated Multi-Walled Carbon Nanotubes as the Active Layer of Organic Solar Cells

Ternary Composite of Polymer, Fullerene and Fluorinated Multi-Walled Carbon Nanotubes as the Active Layer of Organic Solar Cells

Fast Recombination of Charge-Transfer State in Organic Photovoltaic Composite of P3HT and Semiconducting Carbon Nanotubes Is the Reason for Its Poor Photovoltaic Performance

Tetraazapyrene Functionalized Nitroxide Radical as Self-Deposited Functional Interlayer in Organic Solar Cells

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