Effect of ZnSe quantum dot concentration on the fluorescence enhancement of polymer P3HT film

Mastour, Nouha; Hamed, Zied Ben; Benchaabane, Aïda; Sanhoury, M. A. K.; Kouki, Fayçal

doi:10.1016/j.orgel.2013.05.005

Cited by 36 publications

(8 citation statements)

References 45 publications

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“…Musa et al [3] showed the increase in efficiency of composites containing ZnO with small particle size and decrease in carrier lifetime with the increase in concentration of nanoparticles in MEH-PPV/ZnO nanocomposites. Mastour et al [4] theoretically supported the enhancement of fluorescent intensity of P3HT/ZnSe nanocomposites. The phase immiscibility resulted in enormous increase in luminescence of spin coated polyvinylpyrrolidone (PVP) and polyphenylene oxide (PPO) polyblends [5].…”

Section: Introductionmentioning

confidence: 97%

“…The new organic/inorganic hybrid materials utilize the unique optical and electronic properties of each component [1]. The shape, size and spatial distribution of nanoparticles in the organic matrix are important factors which influence various properties of the hybrid nanocomposites for functional devices [2][3][4]. Musa et al [3] showed the increase in efficiency of composites containing ZnO with small particle size and decrease in carrier lifetime with the increase in concentration of nanoparticles in MEH-PPV/ZnO nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and photoluminescence spectra of CdS and CdS/ZnO doped PVK nanocomposite films

Kumar

Sharma

2018

Materials Science-Poland

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Organic/inorganic hybrid materials consisting of quantum dots and conjugate polymers are important for the application in light emitting devices. In the present work, we have studied the effect of CdS and CdS/ZnO nanoparticle addition on the structure and fluorescence properties of spin coated PVK (poly(N-vinyl carbozole)) nanocomposite films. CdS nanoparticles were synthesized by simple co-precipitation technique and ZnO shell was grown on the CdS nanoparticles by simple wet chemical approach. The nanoparticles and the hybrid nanocomposites have been characterized by using XRD, SEM, FT-IR, optical absorption and fluorescence spectroscopic techniques. The absorption peak for pure PVK remains at 345.5 nm accompanied with minor hump ∼480 nm resulting from the incorporation of nanoparticles. It has been observed that the addition of nanoparticles to the hybrid material results in the enhancement of fluorescence intensity at 410 nm to 450 nm spectral regions. These results are important for the development of new light emitting devices at low fabrication costs.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Synthesis and photoluminescence spectra of CdS and CdS/ZnO doped PVK nanocomposite films

Kumar

Sharma

2018

Materials Science-Poland

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“…They present a special interest for both theoretical and experimental considerations [5,6]. These hybrid polymers/inorganic nanocrystal composites can benefit from properties of both types of material components, i.e., the solution processing and the good filmforming property of conjugated polymers [7], low cost, flexibility and ease of processing [8] and the electronic properties of the inorganic semiconductors. For a long time, measurements of optical properties have been considered as a powerful tool in studying the electronic structure of solids.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of P3HT:tributylphosphine oxide-capped CdSe nanocomposites

Benchaabane

Hamed

Lahmar³

et al. 2016

Appl. Phys. A

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The optical properties of nanocomposite layers prepared by incorporation of tributylphosphine oxide (TBPO)-capped CdSe nanocrystals (NCs) in a P3HT polymer matrix are studied using different nanocrystal concentrations. Reflection spectra analyzed through Kim oscillator model lead to the determination of optical constants such as refractive index n, extinction coefficient k, dielectric permittivity e and absorption coefficient a.Using the common Cauchy, Drude-Lorentz, Tauc and single-effective-oscillator theoretical models, we have determined the values of static refractive index n s and permittivity e s , plasma frequency x p , carrier density N, optical band gap E g and oscillator and dispersion energies E 0 and E d , respectively. It is found that TBPO-capped CdSe NCs concentration affects the optoelectronic parameters of the nanocomposite thin films. Moreover, the disorder of this hybrid system is also studied by the determination of Urbach energy, which increases with TBPO-capped CdSe concentration.

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“…The efficiency of these heterojunctions is usually limited by charge recombination phenomena, and the electron transport can also be hindered by surface trap states. These traps can affect the hybrid exciton kinetics in the hybrid organic/ inorganic composite [14].…”

Section: Introductionmentioning

confidence: 99%

Photogeneration process in bulk heterojunction solar cell based on quaterthiophene and CdS nanoparticles

et al. 2015

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In this paper, the blended systems composed of organic oligothiophenes and CdS nanoparticles were investigated through their optical and photoelectrical measurements for their potential applications in photovoltaic devices. The electrical and photoelectrical properties of the devices fabricated with the active layer sandwiched between the metal anode and the metal cathode have been reported. Dependence of the performance of this bulk heterojunction photovoltaic device on their composition has been investigated with respect to charge transport. The organic/inorganic interface area in bulk heterojunction is an important factor in the photovoltaic process. The incorporation of nanoparticles in the polymer matrix, for the purpose to fabricate hybrid inorganic-organic materials, could be a good alternative to enhance the charge generation process of free carriers. The J-V curves of the quaterthiophene (4T) and hybrid quaterthiophene/cadmium sulfide nanoparticles CdS show the important role played by the nanoparticles for energy conversion improvement. The experimental data were found to be in good agreement with a modified Braun-Onsager model.

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Effect of ZnSe quantum dot concentration on the fluorescence enhancement of polymer P3HT film

Cited by 36 publications

References 45 publications

Synthesis and photoluminescence spectra of CdS and CdS/ZnO doped PVK nanocomposite films

Synthesis and photoluminescence spectra of CdS and CdS/ZnO doped PVK nanocomposite films

Optical properties of P3HT:tributylphosphine oxide-capped CdSe nanocomposites

Photogeneration process in bulk heterojunction solar cell based on quaterthiophene and CdS nanoparticles

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