Enhanced photovoltaic performances of panchromatic EDOT-containing dye by introducing bulky dialkylfluorene units in donor moiety

Imae, Ichiro; Koshima, Takuya; Korai, Keisuke; Ooyama, Yousuke; Komaguchi, Kenji; Harima, Yutaka

doi:10.1016/j.dyepig.2016.05.014

Cited by 7 publications

(2 citation statements)

References 37 publications

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“…This results in interactions among the dye molecules, such as electron transfer, leading to decreased electron injection efficiency and, consequently, the photovoltaic conversion efficiency of DSSC. Common approaches for overcoming this issue include the co-adsorption of dye molecules with bulky aliphatic carboxylic acids, such as chenodeoxycholic acid (CDCA) [ 3 ], and introducing bulky substituents into the dye molecules themselves [ 4 ]. These methods increase the distance between the dye molecules adsorbed on TiO 2 , alleviating aggregation.…”

Section: Introductionmentioning

confidence: 99%

Impact of Nitroxyl Radicals on Photovoltaic Conversion Properties of Dye-Sensitized Solar Cells

Imae,

Akazawa,

Harima

2023

Materials

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Nitroxyl radicals, characterized by unique redox properties, have been investigated for their potential influence on the photovoltaic conversion properties of dye-sensitized solar cells (DSSCs). In this study, we investigated the influence of nitroxyl radicals as donor sites in DSSCs. We observed that the redox activity of nitroxyl radicals significantly enhanced the photovoltaic conversion efficiency of DSSCs; this finding can offer new insights into the application of these radicals in solar energy conversion. Furthermore, we found that increasing the proportion of nitroxyl radicals improved the DSSC performance. Through a combination of experimental and analytical approaches, we elucidated the mechanism underlying this enhancement and highlighted the potential for more efficient DSSCs using nitroxyl radicals as key components. These findings provide new avenues for developing advanced DSSCs with improved performances and sustainability.

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Section: Introductionmentioning

confidence: 99%

Impact of Nitroxyl Radicals on Photovoltaic Conversion Properties of Dye-Sensitized Solar Cells

Imae,

Akazawa,

Harima

2023

Materials

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“…We have recently developed novel D-π-A dyes containing 3,4-ethylenedioxythiophene (EDOT) in the oligothiophenes as π-linkers [31,32]. These D-π-A dyes demonstrated a successful expansion of spectral response due to a remarkable red-shift of absorption bands caused by introduction of EDOT [33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Panchromatic dyes having diketopyrrolopyrrole and ethylenedioxythiophene applied to dye-sensitized solar cells

Imae

Itô

Matsuura

et al. 2016

Organic Electronics

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Novel panchromatic donor-acceptor-π-acceptor dyes (DPP1-4) containing diketopyrrolopyrrole (DPP) and 3,4-ethylenedioxythiophene (EDOT) have been designed and synthesized. Introduction of both DPP and EDOT units into a dye framework induced a remarkable red-shift of absorption bands and thus photoactive spectral regions of the dye-sensitized solar cells (DSSCs) based on the panchromatic DPP1-4 dyes were extended far above 800 nm. Influences of alkyl substituents in DPP1-4 on the performances of the DSSCs were discussed, and also those of co-adsorbate on TiO 2 and additive in the electrolyte used in the DSSC preparation were studied to optimize photovoltaic performances of the DSSCs.

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Theoretical study of the effects of modifying the structures of organic dyes based on N,N-alkylamine on their efficiencies as DSSC sensitizers

et al. 2019

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Enhanced photovoltaic performances of panchromatic EDOT-containing dye by introducing bulky dialkylfluorene units in donor moiety

Cited by 7 publications

References 37 publications

Impact of Nitroxyl Radicals on Photovoltaic Conversion Properties of Dye-Sensitized Solar Cells

Impact of Nitroxyl Radicals on Photovoltaic Conversion Properties of Dye-Sensitized Solar Cells

Panchromatic dyes having diketopyrrolopyrrole and ethylenedioxythiophene applied to dye-sensitized solar cells

Theoretical study of the effects of modifying the structures of organic dyes based on N,N-alkylamine on their efficiencies as DSSC sensitizers

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