Effective redox shuttles for polymer gel electrolytes-based quasi-solid-state dye-sensitized solar cells in outdoor and indoor applications: Comprehensive comparison and guidelines

Masud,; Zhou, Haoran; Kim, Hwan Kyu

doi:10.1016/j.mtener.2023.101299

Cited by 18 publications

(21 citation statements)

References 42 publications

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“…One of the initial choices was to investigate quasi-solid-based DSCs (QS-DSCs) which have gained significant attention as a viable alternative to liquid electrolytes for enhancing durability. − These DSCs are known for their comparable PCE values to those of liquid electrolytes, coupled with improved stability achieved through the prevention of leakage and evaporation issues. Many research groups have focused on QS-DSCs utilizing I – /I –3 redox mediators tested under 1 sun, benefiting from the negligible mass transport problem in such a redox mediator. , However, recently, a few groups have ventured into employing both copper and cobalt redox mediators in QS-DSCs. , These experiments have been conducted not only under standard 1 sun conditions but also under indoor low light conditions. This expanded exploration became possible due to the negligible mass transport limitations when testing QS-DSCs under ambient light conditions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Ethylisopropyl Sulfone Medium with a Copper-Based Redox Electrolyte for Ambient Light Dye-Sensitized Solar Cells: Achieving High Efficiency and Enduring Long-Term Stability

Sayah,

Ghaddar

2023

ACS Appl. Energy Mater.

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In recent years, dye-sensitized solar cells (DSCs) have shown remarkable efficiency levels, particularly under low light conditions, making them promising candidates for indoor applications. However, for these devices to be successfully commercialized, high power conversion efficiencies (PCEs) alone are not sufficient. Long-term stability is a critical aspect that needs to be addressed. Most of the well performing DSCs reported so far have utilized conventional organic solvents, which have low boiling points and are highly volatile. While these solvents contribute to achieving high PCE values, they are prone to leakage and evaporation, limiting the long-term stability of the devices. Herein, we report on cosensitized DSC devices (A−E) with commercial dyes (XY1b/MS5) and different additives. This was accomplished by employing for the first time ethylisopropyl sulfone (EiPS) as a high boiling point solvent along with Cu (I) (dmby) 2 •TFMSI and Cu (II) (dmby) 2 Cl•TFMSI as the redox mediators in DSCs. Remarkably, most of the tested DSC devices exhibited exceptional performance, achieving high PCE values ranging from 19% to 23% under 1000 lx irradiation and up to 0.82% under 1 sun simulated solar light irradiation. Our analysis revealed that the N-methylbenzimidazole (NMBI) additive played a crucial role in ensuring both good PCE% and long-lasting durability, particularly in device B. On the other hand, the use of additives such as 1-butyl-3methylimidazolium bis(trifluoromethylsulfonyl)imide (ImTFMSI) and/or LiTFMSI resulted in deterioration of the photovoltaic parameters during the long-term stability tests in the EiPS-based electrolyte medium, observed in devices C−E. This knowledge opens up possibilities for further optimization of ambient-light DSCs with improved stability and provides a viable solution for indoor power generation applications.

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Section: Introductionmentioning

confidence: 99%

Investigation of Ethylisopropyl Sulfone Medium with a Copper-Based Redox Electrolyte for Ambient Light Dye-Sensitized Solar Cells: Achieving High Efficiency and Enduring Long-Term Stability

Sayah,

Ghaddar

2023

ACS Appl. Energy Mater.

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“…In the same year, Hwan Kyu Kim et al. also demonstrated a usage of Co and Cu complex mediated polymer gel electrolyte in DSSC that works efficiently under indoor light condition (CFL;1000 lux) and presented a remarkable PCE of 27.5 and 25 %, respectively [195] . Here, the ABA triblock copolymer is used as gelating material in quasi solid state electrolyte along with the iodide, [Co(bpy) 3 ] 2+/3+ , and [Cu(tmby) 2 ] +/+2 redox shuttles shown in Figure 26a–b.…”

Section: Ss‐dspv Under Indoor Light Conditionsmentioning

confidence: 97%

Molecular Engineering of Photosensitizers for Solid‐State Dye‐Sensitized Solar Cells: Recent Developments and Perspectives

Yadagiri,

Kumar Kaliamurthy,

Yoo

et al. 2023

ChemistryOpen

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Dye‐sensitized solar cells (DSSCs) are a feasible alternative to traditional silicon‐based solar cells because of their low cost, eco‐friendliness, flexibility, and acceptable device efficiency. In recent years, solid‐state DSSCs (ss‐DSSCs) have garnered much interest as they can overcome the leakage and evaporation issues of liquid electrolyte systems. However, the poor morphology of solid electrolytes and their interface with photoanodes can minimize the device performance. The photosensitizer/dye is a critical component of ss‐DSSCs and plays a vital role in the device‘s overall performance. In this review, we summarize recent developments and performance of photosensitizers, including mono‐ and co‐sensitization of ruthenium, porphyrin, and metal‐free organic dyes under 1 sun and ambient/artificial light conditions. We also discuss the various requirements that efficient photosensitizers should satisfy and provide an overview of their historical development over the years.

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“…Dye sensitizer have abundant carboxyl and hydroxyl moieties responsible for interfacial binding with the semiconducting oxide which may expands absorption profile (bathochromic shift) of solar radiations. The polar functional group grafted over dye acts as a bridging and anchoring group. , …”

Section: Working Mechanism Of Functional Electrolyte and Influence Of...mentioning

confidence: 99%

Review on Functional Electrolyte, Redox Polymers, and Solar Conversions in 3G Emerging Photovoltaic Technologies: Progress and Outlook

Kumar,

Maiti

2023

Energy Fuels

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Abundant solar energy has transformed the present solar photovoltaics owing to its rapid conversion into electrical energy without deteriorating ecosystem. Third generation (3G) energy conversion devices reveal utilization of photosensitizer, i.e., organic dye, quantum dots, and perovskite as functional absorbing materials to transform solar energy. Functional polymers are key ingredients (fuels) for the development of suitable redox potential and high temperature or humidity resistive charge transport medium. Electrolyte accelerates the photovoltaic reversible reaction (hole conduction) through exposure of a minimum energy barrier between the photoanode and cathode. Redox-active polymer enhances electrolyte uptake efficiency, ionic conductivity, and dimensional stability of solar device. Various electrolytes exhibit different functional activities due to their different redox energy. The functionalized polymer bears appropriate HOMO–LUMO energetics and low activation energy, which could adjust different photosensitizer with better compatibility. Therefore, the redox polymer percolates a redox couple at a photoexcited sensitizer through control of undesired reactions. It plays the important role of ion and electron transport mediator via expanding suitable interfacial energetics and band structure for photovoltaic reaction. The polymeric pendant groups (chemical environments) preserve electrolyte couples through reducing wettability and thus immobilize the active density of electrolyte anions for photovoltaic reactions. Thus, the polymer improves reversibility due to interfacial compatibility, electrolyte filtration effect, and synergistic stabilization. The present review focuses on polymer-derived functional electrolytes, photosensitizer–polymer interface, thermodynamic interactions, and power conversion efficiencies of 3G photovoltaic devices. Functional polymers open an avenue for the development of stable and efficient photovoltaic reactions at low cost based dyes, quantum dots, and perovskite-sensitized solar conversion systems.

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Effective redox shuttles for polymer gel electrolytes-based quasi-solid-state dye-sensitized solar cells in outdoor and indoor applications: Comprehensive comparison and guidelines

Cited by 18 publications

References 42 publications

Investigation of Ethylisopropyl Sulfone Medium with a Copper-Based Redox Electrolyte for Ambient Light Dye-Sensitized Solar Cells: Achieving High Efficiency and Enduring Long-Term Stability

Investigation of Ethylisopropyl Sulfone Medium with a Copper-Based Redox Electrolyte for Ambient Light Dye-Sensitized Solar Cells: Achieving High Efficiency and Enduring Long-Term Stability

Molecular Engineering of Photosensitizers for Solid‐State Dye‐Sensitized Solar Cells: Recent Developments and Perspectives

Review on Functional Electrolyte, Redox Polymers, and Solar Conversions in 3G Emerging Photovoltaic Technologies: Progress and Outlook

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