Correlation between spectroscopic and morphological properties of composite P3HT/PCBM nanoparticles studied by single particle spectroscopy

Hu, Zhongjian; Tenery, Daeri; Bonner, Maxwell Scotland; Gesquiere, Andre J.

doi:10.1016/j.jlumin.2009.11.031

Cited by 45 publications

(51 citation statements)

References 83 publications

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“…13,[45][46][47][48][49] Figure 9 shows an example of the photoluminescence measurements from isolated nanoparticles of different size and crystallinity in which the arrival time and polarization of each individual photon is recorded via routed time-tagged or time-resolved photon counting techniques. 45 This provides an interesting view into the interplay of amorphous and aggregated P3HT in confined geometries, although much more effort is needed both in synthesis (to minimize size and structural heterogeneities) and photophysical characterization.…”

Section: Polymer Nanoparticles For Organic Photovoltaicsmentioning

confidence: 99%

Optical probes of chain packing structure and exciton dynamics in polythiophene films, composites, and nanostructures

Barnes

Baghar

2012

J Polym Sci B Polym Phys

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This mini-review on the photophysics of poly-alkyl thiophenes (e.g., P3HT) and its blends with electron-acceptor moeties such as fullerenes (e.g., PCBM) and carbon nanotubes focuses on highlights of recent literature on spectroscopic probes of exciton formation, diffusion, charge-separation, and transport in these materials. The literature in this area is vast: more than 3000 papers have been published in on P3HT (and related materials) and applications to organic solar energy harvesting devices over the last 20 years. Thus, no single review can capture the breadth and depth of this research. Here, we attempt to highlight some of the exciting new research efforts aimed at understanding photophysical processes in organic photovoltaic materials. This mini-review is organized as follows: First, a summary of the theoretical framework commonly used to describe fundamental physical processes of charge generation in organic (polymeric) semiconductor materials is presented. We then discuss recent exciting results on ultrafast spectroscopic probes of exciton dynamics in these materials. Finally, we present highlights of new research on polymer nanostructures (nanoparticles and nanofibers) and their exciting applications to organic photovoltaics.

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Section: Polymer Nanoparticles For Organic Photovoltaicsmentioning

confidence: 99%

Optical probes of chain packing structure and exciton dynamics in polythiophene films, composites, and nanostructures

Barnes

Baghar

2012

J Polym Sci B Polym Phys

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“…Figure 3 shows the absorption spectra of the P3HT: ZnS and P3HT: ZnS: PVA-Ag samples and it shows a broad absorption from 400nm to 650nm. Previous reports of P3HT also showed a broad absorption spectra from 320 to 650nm [7,18,19] and reported that it varies depending on the solvent but it is around 500nm. Absorption can be attributed to the p-p* transitions [7].…”

Section: Resultsmentioning

confidence: 88%

“…Diffractogram of pristine P3HT and other samples also shows diffraction peak at around 5.5 o that corresponds to P3HT and the results of Yun et al (on P3HT:TiO2) [18], Greene et al (on P3HT:ZnO) [24] and Zhokhavets et al [21] ( in them the peak was between 5 and 6) . But Dong et al [19] shows that the amorphous P3HT has peak only at around 21.81. It is evident from our four samples and from other previous three results [18,24,21] that the peak of P3HT is around 5.5 o .…”

Section: Resultsmentioning

confidence: 96%

“…UV-Vis spectrum of blend shown in figure 3 is simply the combination of constituents parts of the active materials i.e. nanocrystals and polymer without any additional absorption peaks [7,18,19] since there isn't any ground state interactions between them levels when adding [20]. It is seen that the absorption spectra of the ZnS:P3HT blend is little extended to the lower nanoparticles decreases the inter-chain interaction and conjugation length of P3HT [7].…”

Section: Resultsmentioning

confidence: 99%

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DC conductivity studies of ZnS and Ag nanoparticles doped P3HT thin films

Kareem

2016

IJPR

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Interest in the P3HT: ZnS nanocomposites are increased due to their applicability as an active layer for bulk heterojunction solar cells of high open circuit voltage and charge transport in this type of solar cells determines their performance. So the study of the conduction mechanism of the P3HT:ZnS nanocomposites is significant to improve the efficiency of such solar cells, and this paper discusses both the Arrhenius Model and the Variable Range Hopping (VRH) conduction mechanism in the P3HT:ZnS nanocomposite films. It is found that the addition of the semiconductor nanoparticles does not make any remarkable change in the room temperature DC conduction of P3HT polymer. Further, the films have been studied by their absorption spectra, x-ray diffractogram, scanning electron microscope and noncontact profilometer.

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“…Much of our own work, and that of others in this area, utilizes single‐molecule spectroscopy techniques to investigate the photoluminescence properties of individual semicrystalline polymer nanostructures 13, 45–49. Figure 9 shows an example of the photoluminescence measurements from isolated nanoparticles of different size and crystallinity in which the arrival time and polarization of each individual photon is recorded via routed time‐tagged or time‐resolved photon counting techniques 45.…”

Section: Nanostructured Materials For Organic Photovoltaicsmentioning

confidence: 99%

Orthotopic VX rabbit tongue cancer model with FDG–PET and histologic characterization

Stack¹,

Ye²,

Bartel³

et al. 2012

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Correlation between spectroscopic and morphological properties of composite P3HT/PCBM nanoparticles studied by single particle spectroscopy

Cited by 45 publications

References 83 publications

Optical probes of chain packing structure and exciton dynamics in polythiophene films, composites, and nanostructures

Optical probes of chain packing structure and exciton dynamics in polythiophene films, composites, and nanostructures

DC conductivity studies of ZnS and Ag nanoparticles doped P3HT thin films

Orthotopic VX rabbit tongue cancer model with FDG–PET and histologic characterization

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