A simple triaryl amine-based dual functioned co-adsorbent for highly efficient dye-sensitized solar cells

Song, Hae Min; Seo, Kang Deuk; Kang, Min Soo; Choi, In Tack; Kim, Sang Kyun; Eom, Yu Kyung; Ryu, Jung Ho; Ju, Myung Jong; Kim, Hwan Kyu

doi:10.1039/c2jm16021h

Cited by 68 publications

(25 citation statements)

References 57 publications

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“…HC-A1 , a multi-functional co-adsorbent widely used in our previous research [13,42], and its structure are shown in Figure S3. As expected, because of the light harvesting in shorter wavelength regions and efficient charge recombination retardation [43,44,45,46], the PCE of SGT-020 and SGT-024 -based solar cells was dramatically improved to 10.3% and 4.2%, respectively (see Figure 5). In addition, the dye loading amounts for SGT-020 and SGT-024 were found to be almost no different, implying that the effect of the dye loading amount on photovoltaic performance in this study is relatively small.…”

Section: Resultssupporting

confidence: 71%

Significant Influence of a Single Atom Change in Auxiliary Acceptor on Photovoltaic Properties of Porphyrin-Based Dye-Sensitized Solar Cells

Zhou

Kim

et al. 2018

Nanomaterials

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The rational design of porphyrin sensitizers is always crucial for dye-sensitized solar cells (DSSCs), since the change of only a single atom can have a significant influence on the photovoltaic performance. We incorporated the pyridothiadiazole group, as a stronger electron-withdrawing group, into the commonly well-established skeleton of D-porphyrin-triple bond-acceptor sensitizers by a single atom change for a well-known strong electron-withdrawing benzothiadiazole (BTD) unit as an auxiliary acceptor. The impact of the pyridothiadiazole group on the optical; electrochemical; and photovoltaic properties of D–π–A porphyrin sensitizers was investigated with comparison for a benzothiadiazole-substituted SGT-020 porphyrin. The pyridothiadiazole-substituted SGT-024 porphyrin dye was red-shifted so that the absorption range might be expected to achieve higher light harvest efficiency (LHE) than the SGT-020 porphyrin. However, all the devices were fabricated by utilizing SGT-020 and SGT-024, evaluated and found to achieve a cell efficiency of 10.3% for SGT-020-based DSSC but 4.2% for SGT-024-based DSSC under standard global AM 1.5G solar light conditions. The main reason is the lower charge collection efficiency of SGT-024-based DSSC than SGT-020-based DSSC, which can be attributed to the tilted dye adsorption mode on the TiO2 photoanode. This may allow for faster charge recombination, which eventually leads to lower Jsc, Voc and power conversion efficiency (PCE).

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Section: Resultssupporting

confidence: 71%

Significant Influence of a Single Atom Change in Auxiliary Acceptor on Photovoltaic Properties of Porphyrin-Based Dye-Sensitized Solar Cells

Zhou

Kim

et al. 2018

Nanomaterials

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“…In the 1st desorption/adsorption device with NaOH solution, the sc , oc , FF and were 0.76 V, 10.87 mA/cm 2 , 0.75, and 6.23%, respectively, which are comparable to those of a fresh device. However, the 2nd desorption/adsorption device had a higher power conversion efficiency of 6.44%, which is higher than that of the 1st desorption/adsorption device because of its higher oc of 0.78 V. Although the FF, and of the 3rd desorption/adsorption device are a little lower than those of the fresh device, its oc is markedly increased from 0.74 to 0.77 V. The increase in oc may result from the suppression of electron back-transfer [19][20][21] or upward shift of the TiO 2 conduction band [22,23] relative to the electrolyte potential. In Figure 3(b), the desorption/adsorption devices were all worse than the fresh device.…”

Section: The Photovoltaic Performance Of Dscs For Multi-mentioning

confidence: 99%

Evaluation and Optimization to Recycle Used TiO₂Photoelectrode for Dye-Sensitized Solar Cells

Chen

Liao

2014

International Journal of Photoenergy

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This study proposes a method for recycling and activating the titanium oxide (TiO2)/fluorine-doped tin oxide (FTO) photoanode in dye-sensitized solar cells (DSCs) by repeated dye adsorption and desorption processes using various desorption agents. This simple and convenient method could be utilized to activate TiO2photoelectrodes for DSCs after the long-term operation. The devices are immersed in acidic, alkaline, and neutral media of various concentrations for desorption and then are soaked in the N719 solution again. The optimal device had an overall power conversion efficiency (AM 1.5 G, 100 mW/cm2) with 5 × 10−3 M NaOH solution as a desorption agent being 6.44% better than that of devices that had not undergone recycling and activation.

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“…21 Similarly, Song et al developed a triarylamine-based coadsorbent that prevented π–π stacking of organic dye molecules (NKX2677) and contributed to the light-harvesting effect at short wavelengths. 22…”

Section: Introductionmentioning

confidence: 99%

2-(4-Butoxyphenyl)-N-hydroxyacetamide: An Efficient Preadsorber for Dye-Sensitized Solar Cells

Aung

Hao

et al. 2017

ACS Omega

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The effect of chemical modification of mesoporous TiO 2 electrodes by 2-(4-butoxyphenyl)- N -hydroxyacetamide (BPHA) before dye adsorption is investigated in dye-sensitized solar cells (DSCs). Two organic dyes, LEG4 and Dyenamo blue, were used in combination with the cobalt (II/III) tris(bipyridine) redox couple. The photovoltaic performance of the DSCs is clearly enhanced by BPHA. Preadsorption of mesoporous TiO 2 electrodes with BPHA lowered the amount of adsorbed dye but improved the short-circuit current densities and the power conversion efficiencies by 10–20%, while keeping the open-circuit potential essentially unaffected. Notably, BPHA improved the LEG4 performance, whereas it has been reported for this dye that chenodeoxycholic acid as a coadsorbent lowers solar cell efficiency. Faster dye regeneration was found to be one reason for improved performance, but improved electron injection efficiency may also contribute to the favorable effect of BPHA.

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A simple triaryl amine-based dual functioned co-adsorbent for highly efficient dye-sensitized solar cells

Cited by 68 publications

References 57 publications

Significant Influence of a Single Atom Change in Auxiliary Acceptor on Photovoltaic Properties of Porphyrin-Based Dye-Sensitized Solar Cells

Significant Influence of a Single Atom Change in Auxiliary Acceptor on Photovoltaic Properties of Porphyrin-Based Dye-Sensitized Solar Cells

Evaluation and Optimization to Recycle Used TiO₂Photoelectrode for Dye-Sensitized Solar Cells

2-(4-Butoxyphenyl)-N-hydroxyacetamide: An Efficient Preadsorber for Dye-Sensitized Solar Cells

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A simple triaryl amine-based dual functioned co-adsorbent for highly efficient dye-sensitized solar cells

Cited by 68 publications

References 57 publications

Significant Influence of a Single Atom Change in Auxiliary Acceptor on Photovoltaic Properties of Porphyrin-Based Dye-Sensitized Solar Cells

Significant Influence of a Single Atom Change in Auxiliary Acceptor on Photovoltaic Properties of Porphyrin-Based Dye-Sensitized Solar Cells

Evaluation and Optimization to Recycle Used TiO2Photoelectrode for Dye-Sensitized Solar Cells

2-(4-Butoxyphenyl)-N-hydroxyacetamide: An Efficient Preadsorber for Dye-Sensitized Solar Cells

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Product

Resources

About

Evaluation and Optimization to Recycle Used TiO₂Photoelectrode for Dye-Sensitized Solar Cells