ZnO nanoparticles and polyaniline blend as an active layer for bulk heterojunction solar cell applications

Farzin, Behnam Zeinalvand; Parhizkar, M.; Bidadi, H.; Abbasi, Farhang

doi:10.1007/s10854-018-9924-0

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…As a good approximation, the obtained optical energy gap for all the samples is equal to 3.48 eV, which indicates the significant role of exciton absorption in the behavior of these photoelectrochemical cells. It is worth to say that according to the literature, the obtained optical band gap of pure ZnO-NPs is 3.52 eV 52 . In addition, at the wavelength region of 600–700 nm, the more the PANI, the more the sample’s absorption (the inset of Fig.…”

Section: Resultsmentioning

confidence: 93%

Preparation of a polyaniline/ZnO-NPs composite for the visible-light-driven hydrogen generation

Azmayesh,

Naghshara,

Mohammadi Aref

et al. 2024

Sci Rep

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Compositions of ZnO nanoparticles and polyaniline, in the form of emeraldine salt, were manufactured as thin layers by using the spin-coating method. Then, the effect of polyaniline content on their photoelectrochemical characteristics was studied. Results indicate that all the samples are sensitive to light. Besides, with 0.30% of PANI, the composite sample demonstrates the highest photocurrent density; also, its photocurrent increment starts to increase at a voltage of ⁓ 1.23 V (vs. RHE), which is approximately in accordance with the theoretical potential of water electrolysis. Furthermore, since the rate of electron–hole recombination in this composite sample is the lowest, it possesses the highest photoelectrochemical efficiency. Main findings were analyzed with respect to UV–visible absorption and photoluminescence spectra as well as SEM micrographs of the samples and Raman spectral measurements. Besides, electrochemical impedance spectroscopy analysis was applied to both pure ZnO and the sample with the best response. Effects of drying temperature and layer thickness were also investigated.

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Section: Resultsmentioning

confidence: 93%

Preparation of a polyaniline/ZnO-NPs composite for the visible-light-driven hydrogen generation

Azmayesh,

Naghshara,

Mohammadi Aref

et al. 2024

Sci Rep

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“…ZnO is an n-type semiconductor that is widely used in optoelectronic applications because it has good stability at room temperature. ZnO has been used for several parts of solar cells, such as for the active layer, which functions to absorb sunlight [7], and the electron transfer layer (ETL) [8], which functions to transfer electrons from the active layer to the electrodes [9], [10]. In solar cell applications, ZnO has a fast recombination rate, which is undesirable [11], [12].…”

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confidence: 99%

Investigation of Optical Properties and Electronic Transfer of Temperature-Dependent ZnO Nanocolumnars Grown by DC Sputtering

Kurniawan

Sari

Yulianingtyas

et al. 2022

JPSE (J. Phys. Sci. Eng.)

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The morphology of zinc oxide (ZnO) can determine the distribution of defects in the system, which plays an important role in determining its optical and electronic properties. Here, we investigate the optical and electronic transfer properties of different ZnO surface morphologies. ZnO nanocolumnar was synthesized by direct-current (DC) sputtering followed by annealing using a ratio of T/Tm = 0.15, 0.20, and 0.25. The x-ray diffraction (XRD) results show that an increase in annealing temperature causes an increase in crystal size accompanied by a decrease in lattice strain. Furthermore, the surface morphology of the sample changed with increasing annealing temperature treatment, following the structural zone model. The optical and electronic transfer properties of the samples were investigated in three regions; region 1 (T/Tm = 0.15), region 2 (T/Tm = 0.20), and region 3 (T/Tm = 0.25) using optical modeling. The highest surface electronic transfer was noted in region 2, which is indicated by the highest surface energy loss function (SELF). This research can provide a good understanding in designing optoelectronic systems based on their morphological features.

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Plasma treatment of zinc oxide‐nanoparticles:polyaniline blend as an active layer for the hybrid bulk heterojunction solar cell applications

2020

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In this experimental work, plasma treatment of the active layer in the bulk heterojunction solar cells was studied. The active layers consisting of zinc oxide nanoparticles:polyaniline were spin-coated on indium tin oxide covered glasses then kept in the cold plasma medium for different treatment times. The J-V characteristics were considered under air mass 1.5G standard illumination, and variations of the open-circuit voltages and short circuit currents were studied under different treatment times. The results show that there is an optimum treatment time to improve the properties of the layers. In order to understand the origin of this effect, the Hall coefficient, along with ultravioletvisible spectra were measured, and for studying the topological impact of plasma on the surface of the layers, atomic force microscopy and Fouriertransform infrared spectroscopy were considered. The measurements confirmed the time dependency of the open-circuit voltages and short circuit currents of the cells on the plasma treatment times. Atomic force microscopy of the layers shows the significant topological effects of the plasma treatments on the surface of the active layers for different treatment times. K E Y W O R D S hybrid solar cells, photovoltaic cells, plasma applications

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ZnO nanoparticles and polyaniline blend as an active layer for bulk heterojunction solar cell applications

Cited by 6 publications

References 29 publications

Preparation of a polyaniline/ZnO-NPs composite for the visible-light-driven hydrogen generation

Preparation of a polyaniline/ZnO-NPs composite for the visible-light-driven hydrogen generation

Investigation of Optical Properties and Electronic Transfer of Temperature-Dependent ZnO Nanocolumnars Grown by DC Sputtering

Plasma treatment of zinc oxide‐nanoparticles:polyaniline blend as an active layer for the hybrid bulk heterojunction solar cell applications

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