Influence of graphite-coating methods on the DSSC performance

Junger, Irén Juhász; Großerhode, Christina; Storck, Jan Lukas; Kohn, Sophia; Grethe, Thomas; Graßmann, Carsten; Schwarz-Pfeiffer, Anne; Grimmelsmann, Nils; Meissner, Hubert; Błachowicz, Tomasz; Ehrmann, Andrea

doi:10.1016/j.ijleo.2018.08.041

Cited by 19 publications

(17 citation statements)

References 23 publications

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“…Usually, especially without additional pressure on the electrodes, it takes some time until the infiltration of the electrolyte through the pores of the TiO 2 layer is completed, which is why an increase in efficiency is often observed in the first days (cf. samples 3 and 5 in Figure 4 as well as samples 6 and 8 in Figure 5 ) [ 21 , 28 , 29 , 47 ]. Apparently, this time span is increased regarding sample 9 due to the more extensive, previous drying and resulting higher viscosity, which hinders and delays the diffusion into the TiO 2 pores.…”

Section: Resultsmentioning

confidence: 99%

“…Regarding V OC, an increase for sample 1 and a decrease for the reference was observed after 15 days. The increases of I SC and V OC of sample 1 after 15 days are due to the time required for the electrolyte to infiltrate the semiconductor layer completely [ 21 , 28 , 29 , 47 ]. In the measurements of the 31st day ( Figure 7 c), a decreasing trend of I SC and V OC of the reference can be clearly assumed, whereas the values of sample 1 remained relatively constant.…”

Section: Resultsmentioning

confidence: 99%

“…With those natural dyes and non-toxic DSSCs, efficiencies below 0.1% are mostly common [ 49 , 50 ]. This disadvantage of the natural dye can be compensated by its advantageous low costs and environmental friendliness, which enable future, textile-based large-scale applications of otherwise unused surfaces [ 10 , 21 , 22 , 49 , 50 ].…”

Section: Resultsmentioning

confidence: 99%

“…Here the electrolyte was filled in through capillary action after assembly of the electrodes. Again, no external pressure was applied, so that complete pore filling, together with an efficiency increase, required about three days, as experienced [21,28,29]. Initially, three DSSCs per sample were assembled and in the experimental progress, the best DSSC was selected and is presented here.…”

Section: Methodsmentioning

confidence: 99%

“…Polymer-based gel electrolytes are of high interest regarding textile-based DSSCs, which have severe electrolyte evaporation problems because of a sealing inability due to the otherwise lost textile structure [ 10 , 20 ]. The challenge faced here is to gain a suitable gel electrolyte to improve fully textile DSSCs utilizing low cost, non-toxic and environmentally friendly materials so that the DSSCs can be properly integrated into clothing or large-scale textile architecture, which would be a severe advancement and overcome the problem of typically small energy conversion efficiencies in the future [ 10 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Long-Term Stability Improvement of Non-Toxic Dye-Sensitized Solar Cells via Poly(ethylene oxide) Gel Electrolytes for Future Textile-Based Solar Cells

et al. 2020

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To overcome the long-term stability problems of dye-sensitized solar cells (DSSC) due to solvent evaporation and leakage, gelling the electrolyte with polymers is an appropriate option. Especially for future applications of textile-based DSSCs, which require cost-effective and environmentally friendly materials, such an improvement of the electrolyte is necessary. Therefore, the temporal progressions of efficiencies and fill factors of non-toxic glass-based DSSCs resulting from different gel electrolytes with poly(ethylene oxide) (PEO) are investigated over 52 days comparatively. Dimethyl sulfoxide (DMSO) proved to be a suitable non-toxic solvent for the proposed gel electrolyte without ionic liquids. A PEO concentration of 17.4 wt% resulted in an optimal compromise with a relatively high efficiency over the entire period. Lower concentrations resulted in higher efficiencies during the first days but in a poorer long-term stability, whereas a higher PEO concentration resulted in an overall lower efficiency. Solvent remaining in the gel electrolyte during application was found advantageous compared to previous solvent evaporation. In contrast to a commercial liquid electrolyte, the long-term stability regarding the efficiency was improved successfully with a similar fill factor and thus equal quality.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Long-Term Stability Improvement of Non-Toxic Dye-Sensitized Solar Cells via Poly(ethylene oxide) Gel Electrolytes for Future Textile-Based Solar Cells

et al. 2020

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Photoelectric Performance of Several Dithienoheterocycles Dyes and Nanocomposite of Dyes/Graphene Quantum Dots for DSSCs

Sun

Yang

Liu

et al. 2023

Advcd Theory and Sims

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Three D‐A’‐π‐A type of metal‐free organic sensitizers, which are based on naphtho [2,3‐d] [1‐3] triazole entity as auxiliary acceptor and several dithienoheterocycles (cyclopentadithiophene, dithieno[3,2‐b:2’,3’‐d]silole, dithieno[3,2‐b:2’,3’‐d]pyrrole) as π‐conjugated bridge, are investigated using density functional theory (DFT)/time‐dependent DFT methods. First, the influence of different π‐bridges on the photovoltaic properties in three dyes is analyzed by mainly studying geometry structures, spectral characteristics, electron injection, dye regeneration, and charge difference density to explain highest performance of HJL‐3. Second, molecular design of introducing graphene quantum dots (GQDs) is carried out, and the results find that HJL‐3@GQDs display better photoelectric performance because GQDs have a positive impact on some parameters (such as light‐harvesting efficiency, electron injection amounts, dipole moment, and so on) upon introducing GQDs. This work provides a reasonable explanation for the experiment and a way to regulate performance of dye‐sensitized solar cells.

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Commercial Dry Batteries: Graphite Recycling and Its Application as Counter Electrodes in a Photovoltaic System

da Silva Vieira,

de Almeida,

Filho

et al. 2024

J. Electron. Mater.

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Influence of graphite-coating methods on the DSSC performance

Cited by 19 publications

References 23 publications

Long-Term Stability Improvement of Non-Toxic Dye-Sensitized Solar Cells via Poly(ethylene oxide) Gel Electrolytes for Future Textile-Based Solar Cells

Long-Term Stability Improvement of Non-Toxic Dye-Sensitized Solar Cells via Poly(ethylene oxide) Gel Electrolytes for Future Textile-Based Solar Cells

Photoelectric Performance of Several Dithienoheterocycles Dyes and Nanocomposite of Dyes/Graphene Quantum Dots for DSSCs

Commercial Dry Batteries: Graphite Recycling and Its Application as Counter Electrodes in a Photovoltaic System

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