Influence of ZnS quantum dots on optical and photovoltaic properties of poly(3-hexylthiophene)

Mall, Monika; Kumar, Pankaj; Chand, Suresh; Kumar, Lokendra

doi:10.1016/j.cplett.2010.06.067

Cited by 26 publications

(21 citation statements)

References 34 publications

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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: 99%

“…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]. UV-Vis spectrum of blend shown in figure 3 is simply the combination of constituents parts of the active materials i.e.…”

Section: Resultsmentioning

confidence: 99%

“…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%

“…These surface images confirm the surface results obtained from the profilometer observations that the surface is not smooth and the film is continuous without pinholes but ZnS particles are agglomerated over the surface of the films. The agglomerated ZnS particles of nanocrystallites over the surface have a positive impact on the device, the electron acceptor with nanoscale properties contacts with the bottom electrode, wavelength region and it may be due to the quantum confinement effect from the inorganic nano particles [7,18,20]. This blue shift of the absorption edge may be due to the rising in band gap between p and p* energy Al, and it will not happen if the electron acceptor is buried inside the P3HT polymer matrix.…”

Section: Resultsmentioning

confidence: 99%

“…Various combinations of donor and acceptor materials have been used to build bulk heterojunction solar cells, especially polymer -fullerene (polymer -PCBM) solar cells are the most studied combination bulk-heterojunction cells [1][2][3][4][5] and recently ZnS nanoparticles [6,7] also have been tested with P3HT polymer for bulk heterojunction solar cells.…”

Section: Introductionmentioning

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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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

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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In situ synthesis and characterization of ZnS/epoxy nanocomposites via gas‐liquid state reaction method

Ding

Wang

Zhang

2011

J of Applied Polymer Sci

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In this article, the ZnS/epoxy nanocomposites were successfully prepared by the reaction of zinc acetate and H 2 S gas via a simple step. Epoxy resin acted as the matrix for the formation of ZnS nanoparticles (10-20 nm) in the reaction system and kept them from agglomerating. The structure, composition, and mechanical properties of the resultant products were successfully investigated by powder X-ray diffraction, transmission electron microscope, field emission scanning electron microscope, energy dispersive X-ray fluorescence, and universal testing machine. Meanwhile, by employing differential scanning calorimetry (DSC) we had studied, under nonisothermal condition, the kinetic analysis of the cure reaction which was performed using two classic models: Kissinger and Flynn-Wall-Ozawa. The activation energy of curing reaction was 74.63 kJ/mol and 77.57 kJ/ mol, respectively, by Kissinger's and Flynn-Wall-Ozawa's methods. The possible mechanism of preparation of ZnS/epoxy composites was discussed in this article.

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Photoluminescence decay time studies on ZnS in cubic and hexagonal phase and its mechanico‐chemical interaction with polyaniline

Scocioreanu¹,

Mihuţ²,

Baibarac³

et al. 2013

Physica Status Solidi (b)

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We report new photoluminescence (PL) data generated by pulsed optical excitation on the composites achieved by a mechanico-chemical reaction between ZnS in the cubic (c) and wurtzite (w) phases and polyaniline-emeraldine base (PANI-EB). Under continuous and pulsed optical excitation, powders of the (w)ZnS and (w)ZnS/PANI-EB composites display PL with different spectral compositions. Contrary to expectations, the (c)ZnS and the (c)ZnS/PANI-EB composite displayed weak PL and decay time in the range of nanoseconds. This results from the great involvement of the surface states in nanometric powders which creates efficient channels for the non-radiative recombination of the carriers. 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 0.0 0.5 1.0 b 3.05 2.70 2.35 Energy (eV) Normalized PL intensity a PL spectra of (w)ZnS/PANI-EB under continous (a) and pulsed optical excitation (b).

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Influence of ZnS quantum dots on optical and photovoltaic properties of poly(3-hexylthiophene)

Cited by 26 publications

References 34 publications

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

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

In situ synthesis and characterization of ZnS/epoxy nanocomposites via gas‐liquid state reaction method

Photoluminescence decay time studies on ZnS in cubic and hexagonal phase and its mechanico‐chemical interaction with polyaniline

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