Organic Dyes in Dye-Sensitized Solar Cells Featuring Back Reflector

Zdyb, Agata; Krawczak, Ewelina

doi:10.3390/en14175529

Cited by 10 publications

(5 citation statements)

References 67 publications

(85 reference statements)

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“…These results agree with the existing literature for DSSC back reflectors. Zdyb and Krawczak, for instance, achieved a 15.7% increase in PCE with a 19.7% increase in J SC by using BaSO 4 as a back reflector on DSSCs using N719 dye, and obtained even larger increases in PCE when used on alternative sensitizing dyes [52]. This speaks to the promise that highly reflective materials have for increasing light harvesting in solar cells.…”

Section: Discussionmentioning

confidence: 95%

Enhancing Light Harvesting in Dye-Sensitized Solar Cells through Mesoporous Silica Nanoparticle-Mediated Diffuse Scattering Back Reflectors

Fina,

Kaur,

Chang

et al. 2023

Electronic Materials

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Dye-sensitized solar cells (DSSCs) hold unique promise in solar photovoltaics owing to their low-cost fabrication and high efficiency in ambient conditions. However, to improve their commercial viability, effective, and low-cost methods must be employed to enhance their light harvesting capabilities, and hence photovoltaic (PV) performance. Improving the absorption of incoming light is a critical strategy for maximizing solar cell efficiency while overcoming material limitations. Mesoporous silica nanoparticles (MSNs) were employed herein as a reflective layer on the back of transparent counter electrodes. Chemically synthesized MSNs were applied to DSSCs via bar coating as a facile fabrication step compatible with roll-to-roll manufacturing. The MSNs diffusely scatter the unused incident light transmitted through the DSSCs back into the photoactive layers, increasing the absorption of light by N719 dye molecules. This resulted in a 20% increase in power conversion efficiency (PCE), from 5.57% in a standard cell to 6.68% with the addition of MSNs. The improved performance is attributed to an increase in photon absorption which led to the generation of a higher number of charge carriers, thus increasing the current density in DSSCs. These results were corroborated with electrochemical impedance spectroscopy (EIS), which showed improved charge transport kinetics. The use of MSNs as reflectors proved to be an effective practical method for enhancing the performance of thin film solar cells. Due to silica’s abundance and biocompatibility, MSNs are an attractive material for meeting the low-cost and non-toxic requirements for commercially viable integrated PVs.

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Section: Discussionmentioning

confidence: 95%

Enhancing Light Harvesting in Dye-Sensitized Solar Cells through Mesoporous Silica Nanoparticle-Mediated Diffuse Scattering Back Reflectors

Fina,

Kaur,

Chang

et al. 2023

Electronic Materials

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“…It was suggested that the nucleation and conjoining of microscopic particles are responsible for the development of such porous structures [8]. It is the mesoporous TiO2 layer that aids in the increased adsorption of dye molecules, as well as the increased penetration into the TiO2 layer by the electrolyte [9].…”

Section: Surface Morphology Fesem/ Edx and Xrdmentioning

confidence: 99%

Mitragyna Speciosa Dye Sensitiser as the Light-Harvesting Molecules for Dye-Sensitised Solar Cells

Azlina

Mamat²,

Soh³

et al. 2022

Jurnal Teknologi

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In this study, natural dye sensitisers derived from ketum (Mitragyna speciosa-MS), spinach (Spinacia oleracea-SO), curry (Murraya koenigii-MK), papaya (Carica papaya-CP), and henna (Lawsonia inermis-LI) were investigated for dye-sensitised solar cells (DSSCs). Ultraviolet-Visible Spectroscopy (UV-Vis), Fourier Transform Infrared spectroscopy (FTIR), Open-Circuit Voltage Decay (OCVD) and Current to Voltage (I-V) were used to analyse the natural dye and the fabricated DSSC. It was observed that all dye solutions contain the majority of important functional groups of chlorophyll-based sensitisers, which is crucial for the dye-to-TiO2 (Titanium (II) Oxide) attachment, making them suitable sources of energy harvesting pigments. In this regard, the dye pH and chemical bonding of the respective dyes play a significant role that contribute to the overall performance of the DSSCs. It was discovered that a dye based on MK provided the best DSSC performance. This is because MK-based dye has higher content of functional groups, an optimal pH, and the slowest properties of back electron recombination among the OCVD measurements. Because of the combination of these properties, the open-circuit voltage (VOC), short-circuit current density (JSC), and power conversion efficiency (PCE) values have been determined to be 0.58 V, 2.48 mA/cm2, and 0.47%, respectively.

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“…Investigation of the optical properties of push-pull dyes is notably justified by the number of applications requiring push-pull dyes. Thus, push-pull dyes have been extensively used in photopolymerization [ 37 , 38 , 39 , 40 , 41 , 42 , 43 ], non-linear optics [ 4 , 5 , 44 , 45 , 46 , 47 , 48 , 49 ], light-to-energy conversion [ 6 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 ], biological labelling [ 58 , 59 , 60 , 61 , 62 , 63 , 64 ], light-emitting diodes [ 65 , 66 , 67 ] or cell nucleus staining [ 68 , 69 ]. Among electron donors that have only been scarcely used for the design of push-pull dyes, pyrene is one example.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Optical Properties of a Series of Push-Pull Dyes Based on Pyrene as the Electron Donor

2023

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Fifteen push-pull dyes comprising the tetracyclic polyaromatic pyrene have been designed and synthesized. The optical properties of the fifteen dyes have been examined in twenty-two solvents of different polarities. Surprisingly, contrarily to what is classically observed for push-pull dyes of D-π-A structures, a negative solvatochromism could be found for numerous dyes. The photoluminescence and thermal properties of the dyes were also examined. Theoretical calculations were carried out to support the experimental results.

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Organic Dyes in Dye-Sensitized Solar Cells Featuring Back Reflector

Cited by 10 publications

References 67 publications

Enhancing Light Harvesting in Dye-Sensitized Solar Cells through Mesoporous Silica Nanoparticle-Mediated Diffuse Scattering Back Reflectors

Enhancing Light Harvesting in Dye-Sensitized Solar Cells through Mesoporous Silica Nanoparticle-Mediated Diffuse Scattering Back Reflectors

Mitragyna Speciosa Dye Sensitiser as the Light-Harvesting Molecules for Dye-Sensitised Solar Cells

Synthesis and Optical Properties of a Series of Push-Pull Dyes Based on Pyrene as the Electron Donor

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