Experimental and theoretical study of 1, 4-naphthoquinone based dye in dye-sensitized solar cells using ZnO photoanode

Shinde, Dnyaneshwar R.; Tambade, Popat; Pathan, Habib M.; Gadave, K. M.

doi:10.1515/msp-2017-0088

Cited by 5 publications

(4 citation statements)

References 53 publications

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Section: Resultsmentioning

confidence: 99%

“…The PCE (η) of DSSCs was calculated by the equation η = FF × J SC × V OC / P in where FF is the fill factor, J SC the short-circuit current, V OC is the open-circuit voltage, and P in is the power of incident light. The fill factor (FF) was calculated by equation FF = J m V m / J SC V OC where J m is the current density at the maximum power point and V m is the voltage at the maximum power point. ,,, …”

Section: Resultsmentioning

confidence: 99%

“…The fill factor (FF) was calculated by equation FF = J m V m /J SC V OC where J m is the current density at the maximum power point and V m is the voltage at the maximum power point. 2,34,53,54 5. CONCLUSIONS In this paper, the effect of CdS nanorods on the performance of DSSCs has been studied.…”

Section: Resultsmentioning

confidence: 99%

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Influence of CdS Morphology on the Efficiency of Dye-Sensitized Solar Cells

2018

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Cadmium sulfide (CdS) used in dye-sensitized solar cells (DSSCs) is currently mainly synthesized by chemical bath deposition, vacuum evaporation, spray deposition, chemical vapor deposition, electrochemical deposition, sol–gel, solvothermal, radio frequency sputtering, and hydrothermal process. In this paper, CdS was synthesized by hydrothermal process and used with a mixture of titanium dioxide anatase and rutile (TiO 2(A+R) ) to build the photoanode, whereas the counter electrode was made of nanocomposites of conductive polymer polyaniline (PANI) and multiwalled carbon nanotubes (MWCNTs) deposited on a fluorine-doped tin oxide substrate. Two morphologies of CdS have been obtained by using hydrothermal process: branched nanorods (CdS BR ) and straight nanorods (CdS NR ). The present work indicates that controlling the morphology of CdS is crucial to enhance the efficiency of DSSCs device. Indeed, the higher power conversion energy of 1.71% was achieved for a cell CdS BR –TiO 2(A+R) /PANI–MWCNTs under 100 mW/cm 2 , whereas the power conversion energy of 0.97 and 0.83% for CdS NR –TiO 2(A+R) /PANI–MWCNTs and TiO 2(A+R) /PANI–MWCNTs, respectively. Therefore, by increasing the surface to volume ratio of CdS nanostructures and the crystallite size into those structures opens the way to low-cost chemical production of solar cells.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Influence of CdS Morphology on the Efficiency of Dye-Sensitized Solar Cells

2018

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“…Khanmohammadi et al 35 did a comparative study to understand the effect of electron-withdrawing and electron-donating substitution on naphthoquinone dye with different substitutions on moiety parts that affect photovoltaic efficiency. Shinde et al 36 studied the 4-(3-chloro-1,4-dioxo1,4-dihydronaphthalen-2-ylamino) benzoic acid sensitizer using a simple chemical reaction. The sensitizer was examined computationally using density-functional theory (DFT) and time-dependent DFT (TD-DFT), and the photoelectrochemical properties of DSSCs were studied using ZnO as a photoanode.…”

Section: Introductionmentioning

confidence: 99%

Naphthoquinoneoxime-Sensitized Titanium Dioxide Photoanodes: Photoelectrochemical Properties

et al. 2022

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Naphthoquinoneoxime derivatives, viz., LwOx, 3-hydroxy-4-(hydroxyimino)naphthalen-1 (4H)-one; PthOx, 3-hydroxy-4-(hydroxyimino)-2-methylnaphthalen-1(4H)-one; and Cl_LwOx, 2-chloro-3-hydroxy-4-(hydroxyimino)naphthalen-1(4H)-one, are used in fabrication of dye-sensitized solar cells (DSSCs). The photophysical and electrochemical properties of the sensitizers were studied. The HOMO–LUMO energy gaps of the sensitizers (LwOx, PthOx, and Cl_LwOx) calculated by using the intersection of UV–visible and fluorescence spectra are 2.85, 2.71, and 2.87 eV, respectively. The energy band alignment energy level of the sensitizer, that is, the lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO), should match with the energy level of the TiO2 conduction band and the redox potential of iodine/triiodide electrolyte to allow smooth electron transfer. The electrochemical characterization of sensitizers was done to find the LUMO and HOMO level of the sensitizer. It shows that the LUMO level of (LwOx, PthOx, and Cl_LwOx) is above the conduction band position of TiO2. Electrochemical impedance spectroscopy was used to study the charge transport resistance and electron lifetime of DSSCs. The charge transport resistance at the TiO2 |electrolyte|counter electrode interface was reduced in the Cl_LwOx device; thus, the electron lifetime of Cl_LwOx was enhanced compared to LwOx and PthOx sensitizers. The fabricated device was characterized using photocurrent density–voltage (J–V) measurement. It is observed that there was an enhancement in the overall power conversion efficiency (η) of the DSSCs fabricated by using Cl_LwOx sensitizers as compared to LwOx and PthOx sensitizer-loaded photoanodes. Enhancement in power conversion efficiency, that is, photovoltage and photocurrent, is achieved due to the chlorine substituent. Thus, the chlorine substituent naphthoquinoneoxime pushes the electron density, enhancing the pushing nature and facilitating the lone pair present in the N–OH moiety to attach to TiO2 more strongly.

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