Impact of photo electrode thickness and annealing temperature on natural dye sensitized solar cell

Ruhane, T.A.; Islam, M. Tauhidul; Rahaman, Saifur; Bhuiyan, Mohammad Amir Hossain; Islam, Jahid M. M.; Bhuiyan, Touhidul Islam; Khan, K. A.; Khan, Mubarak A.

doi:10.1016/j.seta.2017.01.012

Cited by 44 publications

(13 citation statements)

References 32 publications

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“…4. All TiO 2 samples showed broad absorption bands between 400 cm −1 and 800 cm −1 , mainly ascribed to Ti−O and Ti−O−Ti stretching modes, which affirmed the formation of TiO 2 particles [16,17]. The absorption peaks between 3000 cm −1 and 3800 cm −1 were assigned to O−H stretching vibration mode of hydroxyl functional group.…”

Section: Resultsmentioning

confidence: 75%

Enhanced visible light response of TiO2 nanoparticles by natural dyes

Somsongkul¹,

Chirawatkul²,

Kongmark³

2021

ScienceAsia

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The visible light responding TiO 2 nanoparticles have been achieved through green synthesis method. In this experiment, three types of natural dyes including Turmeric extract, Bergamot fruit extract, and Siamese neem leave extract were used as stabilizing agents. TiO 2 nanoparticles were synthesized by solution-based one-step and two-step methods. The results of X-ray diffraction (XRD) and Ti K-edge X-ray absorption near edge structure (XANES) spectroscopy affirmed that anatase TiO 2 nanoparticles were obtained from all samples with the average crystallite sizes of 5-8 nm. Moreover, UV-Visible absorption spectra revealed that the natural dyes play an important role in improving the visible light absorption ability of TiO 2 and decreasing the band gap energy of TiO 2 from 3.1 eV to 2.3 eV. The absorption edge energies of the two-step samples were lower than those of the one-step samples. The infrared spectra of the two-step TiO 2 displayed complex vibration features which were related to the carbonyl (C− −O) and hydroxyl (O−H) groups of natural dyes. The presence of these functional groups was obviously responsible for the optical response of TiO 2 nanoparticles in the visible wavelength region.

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Section: Resultsmentioning

confidence: 75%

Enhanced visible light response of TiO2 nanoparticles by natural dyes

Somsongkul¹,

Chirawatkul²,

Kongmark³

2021

ScienceAsia

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“…[ 33 ] The solvent was used to prepare TiO 2 slurry in an acidic medium for crack‐free surface thin film, which enhanced photoconversion efficiency (PCE) in DSSC. [ 34 ] The annealing temperature of different working electrodes with various synthesis methods for fabrication of DSSCs are shown in Table 2 . The important factors for the optimization of DSSCs depending on the different parameters/materials/methods are tabulated after obtaining data from different kinds of literature.…”

Section: Components Of Dsscmentioning

confidence: 99%

Review on Efficiency Enhancement Using Natural Extract Mediated Dye‐Sensitized Solar Cell for Sustainable Photovoltaics

Bist

Chatterjee

2021

Energy Tech

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Dye‐sensitized solar cells (DSSCs) have turned a new horizon in energy research due to their widespread exploration over two decades by improving efficiency, cost‐effectiveness, and easy process than inorganic‐based solar cells. The major challenges are metal complexes on designing the cells and sustainability implications for further rapid expansion due to its toxicity. To overcome the problems associated with metal complexes, the dyes are extracted from bionatural sources such as flowers, fruits, barks, petals, roots, leaves, and beans of plants. These organic dyes are being nontoxic, cost‐effective, abundant, environmentally friendly, and easy to extract, which is made them extensively applicable for DSSC. Through this review, readers may get an idea about the effect in the efficiency of the solar cell by applying variable semiconductors, effects of solvents, variable light‐harvesting pigments, types of electrolytes, and modification of counter electrodes by certain polymeric materials or nanomaterials. Furthermore, the effects of methodology, processing temperature, and pH of the medium during synthesis on solar cell parameters, such as the efficiency of DSSC, are critically analyzed which are reported by other researchers.

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“…; modifying the absorption properties of the dyes by Ru dye, organic dye, dye mixture, etc. to enhance cell efficiency [17][18][19][20][21][22].…”

Section: Basics Of Dsscmentioning

confidence: 99%

Effect of Combination of Natural Dyes and the Blocking Layer on the Performance of DSSC

Bhuiyan¹,

Kabir²,

Manir³

et al. 2021

Solar Cells - Theory, Materials and Recent Advances

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Over the years, researchers have been working on replacing sensitized dye for dye sensitized solar cells (DSSC), because of its low production cost, biodegradability, and non-toxicity. However, the overall performance of natural dye-based DSSCs is low compared to the DSSCs sensitized with Ruthenium based dyes. The combination of natural dyes with an optimized choice of the extracting solvents and the proper volume ratio of mixture of the dyes, enhances inherent properties, such as absorption and adsorption of the dyes. It also allows the device to utilize photon energy more efficiently over the entire visible wavelength. As a result, DSSC sensitized with the dye mixture shows higher absorbance, and cumulative absorption properties over the whole visible region than the DSSC fabricated with individual dyes and showed higher photocurrent. Another effective way to improve cell efficiency is by using a blocking layer. The blocking layer increases the photocurrent, is mainly due to the improvement of the electron recombination at the transparent conducting oxide/electrolyte interfaces. Also, the blocking layer’s compact structure creates an effective pathway for electron transportation; thus, the device’s photocurrent increases. Additionally, a slight improvement in the open-circuit voltage and fill factor was observed, thus cell efficiency enhances significantly. By both the proper ratio of dye mixture and the blocking layer improves cell performance of DSSC and opens a new pathway for future studies.

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Impact of photo electrode thickness and annealing temperature on natural dye sensitized solar cell

Cited by 44 publications

References 32 publications

Enhanced visible light response of TiO2 nanoparticles by natural dyes

Enhanced visible light response of TiO2 nanoparticles by natural dyes

Review on Efficiency Enhancement Using Natural Extract Mediated Dye‐Sensitized Solar Cell for Sustainable Photovoltaics

Effect of Combination of Natural Dyes and the Blocking Layer on the Performance of DSSC

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