Performance enhancement of dye-sensitized solar cells (DSSCs) using a natural sensitizer

Arifin, Zainal; Soeparman, Sudjito; Widhiyanuriyawan, Denny; Sutanto, Bayu; Suyitno, Suyitno

doi:10.1063/1.4968376

Cited by 11 publications

(6 citation statements)

References 9 publications

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“…As a result, when compared at 3 h of aging time, the plasma treatment improved the efficiency by~50%. Notably, the resulting efficiency was comparable to those of the previously reported chlorophyll-based DSSCs with non-aqueous electrolytes [31][32][33]. The efficiency was still low, even compared to the eosin-Y-based DSSCs in Figure 4d.…”

Section: Resultssupporting

confidence: 79%

Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

et al. 2021

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Organic solvents used for electrolytes of dye-sensitized solar cells (DSSCs) are generally not only toxic and explosive but also prone to leakage due to volatility and low surface tension. The representative dyes of DSSCs are ruthenium-complex molecules, which are expensive and require a complicated synthesis process. In this paper, the eco-friendly DSSCs were presented based on water-based electrolytes and a commercially available organic dye. The effect of aging time after the device fabrication and the electrolyte composition on the photovoltaic performance of the eco-friendly DSSCs were investigated. Plasma treatment of TiO2 was adopted to improve the dye adsorption as well as the wettability of the water-based electrolytes on TiO2. It turned out that the plasma treatment was an effective way of improving the photovoltaic performance of the eco-friendly DSSCs by increasing the efficiency by 3.4 times. For more eco-friendly DSSCs, the organic-synthetic dye was replaced by chlorophyll extracted from spinach. With the plasma treatment, the efficiency of the eco-friendly DSSCs based on water-electrolytes and chlorophyll was comparable to those of the previously reported chlorophyll-based DSSCs with non-aqueous electrolytes.

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Section: Resultssupporting

confidence: 79%

Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

et al. 2021

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“…The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of the ZnO nps were calculated using eqs and as given below where E HOMO and E LUMO are the energy levels of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), respectively, E oxidation onset and E reduction onset are the oxidation and reduction values, respectively, in the CV plot, and 4.4 is an adjustment factor . The LUMO value for ZnO-500 °C was −3.54 eV, whereas the HOMO value was −5.83 eV.…”

Section: Resultsmentioning

confidence: 99%

“…where E HOMO and E LUMO are the energy levels of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), respectively, E oxidation onset and E reduction onset are the oxidation and reduction values, respectively, in the CV plot, and 4.4 is an adjustment factor. 52 The LUMO value for ZnO-500 °C was −3.54 eV, whereas the HOMO value was −5.83 eV. For ZnO-550 °C, the LUMO was −3.2 eV and HOMO was −6.5 eV.…”

Section: ■ Introductionmentioning

confidence: 99%

One-Step Synthesized ZnO np-Based Optical Sensors for Detection of Aldicarb via a Photoinduced Electron Transfer Route

et al. 2020

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Pesticides are used in agriculture for crop production enhancement by controlling pests, but they have acute toxicological effects on other life forms. Thus, it becomes imperative to detect their concentration in food products in a fast and accurate manner. In this study, ZnO nanoparticles (ZnO nps) have been used as optical sensors for the detection of pesticide Aldicarb via a photoinduced electron transfer (PET) route. ZnO nps were synthesized directly by calcining zinc acetate at 450, 500, and 550 °C for 2 h. ZnO nps were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and UV–vis absorption and photoluminescence (PL) spectroscopies to study the phase, crystallinity, shape, morphology, absorbance, and fluorescence of the prepared ZnO nps. XRD and Raman studies confirmed the crystalline nature of ZnO nps. The average crystallite size obtained was 13–20 nm from the XRD study. The SEM study confirmed spherical-shaped ZnO nps with average sizes in the range of 70–150 nm. The maximum absorbance was obtained in the 200–500 nm regions with a prominent peak absorbance at 372 nm from UV–vis spectra. The corresponding band gap for ZnO nps was calculated using Tauc’s plots and was found to be 3.8, 3.67, and 3.45 eV for the 450, 500, and 550 °C calcined samples, respectively. The fluorescence spectra showed an increase in the intensity along with the increase in the size of ZnO nps. The ZnO nps (samples calcined at 500 and 550 °C) exhibited a response toward Aldicarb, owing to their pure phase and higher PL intensity. Both the samples showed systematic detection of Aldicarb in the range of 250 pM to 2 nM (500 °C) and 250 pM to 5 nM (550 °C). Among the various quenching mechanisms, PET was found to be the dominant process for the detection of Aldicarb. This method can be used for the detection of Aldicarb in real (food) samples using a portable fluorimeter.

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“…Besides the organometallic dyes, organic dyes such as porphyrin , TP6CADTS , RK1 , and ADEKA‐1 have been utilized in DSSC applications. Natural sensitizers or chlorophyll dye extracted from leaves such as Pandannus amaryllifolius and papaya have been investigated as well .…”

Section: Dye‐sensitized Solar Cells (Dsscs)mentioning

confidence: 99%

Recent advances in photo-anode for dye-sensitized solar cells: a review

2017

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Summary Dye‐sensitized solar cell (DSSC) attracts immense interest in the last few decades due to its various attractive features such as low production cost, ease of fabrication and relatively high conversion efficiency, which make it a strong competitor to the conventional silicon‐based solar cell. In DSSC, photo‐anode performs two important functions, viz. governs the collection and transportation of photo‐excited electrons from dye to external circuit as well as acts as a scaffold layer for dye adsorption. The photo‐anode usually consists of wide band gap semiconducting metal oxides such as titanium dioxide (TiO2) and zinc oxide (ZnO) deposited on the transparent conducting oxide substrates. The morphology and composition of the semiconductor oxides have significant impact on the DSSC photovoltaic performance. Therefore, enormous research efforts have been undertaken to investigate the influences of photo‐anode modifications on DSSC performance. The modifications can be classified into three categories, namely interfacial modification through the introduction of blocking and scattering layer, doping with non‐metallic anions and metallic cations and replacing the conventional mesoporous semiconducting metal oxide films with one‐dimensional or two‐dimensional nanostructures. In the present review, the previously mentioned modifications on photo‐anode are summarized based on the recent findings, with particular emphasis given to published works for the past 5 years. Copyright © 2017 John Wiley & Sons, Ltd.

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Performance enhancement of dye-sensitized solar cells (DSSCs) using a natural sensitizer

Cited by 11 publications

References 9 publications

Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

One-Step Synthesized ZnO np-Based Optical Sensors for Detection of Aldicarb via a Photoinduced Electron Transfer Route

Recent advances in photo-anode for dye-sensitized solar cells: a review

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