Dye‐Sensitized Solar Cells Based on Donor‐π‐Acceptor Fluorescent Dyes with a Pyridine Ring as an Electron‐Withdrawing‐Injecting Anchoring Group

Ooyama, Yousuke; Nagano, Tomoya; Inoue, Shogo; Imae, Ichiro; Komaguchi, Kenji; Ohshita, Joji; Harima, Yutaka

doi:10.1002/chem.201101923

Cited by 134 publications

(66 citation statements)

References 33 publications

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“…Dye-sensitized solar cells (DSSCs) are one of their main applications nowadays, which have attracted a lot of interest, as a new option in photovoltaics area (especially as potential materials for photovoltaic cells) [21][22][23][24][25]. Dye-sensitized solar cells are more suitable to be used at large scale in comparison with the classical Step 2…”

Section: Introductionmentioning

confidence: 99%

New Hybrid Materials Synthesized with Different Dyes by Sol-Gel Method

Gheonea

Crasmareanu

Pleşu

et al. 2017

Advances in Materials Science and Engineering

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One well-known method for hybrids synthesis with incorporated organic dyes is sol-gel method, which is based on the concept of molecular manipulation to design ceramics, glasses, and composites. The low-temperature process allows for the incorporation of guest organic molecules within the inorganic matrix, as well as for the synthesis of hybrid networks in which the organic and inorganic phases are interpenetrating. The aim of the work presented in this paper was the preparation of the gels with three different dyes, at different molar ratios by using the hydrolytic sol-gel process. The interaction of the dye and the oxide was examined by UV-vis spectroscopy and FT-IR. The thermal stability of the hybrid organic-inorganic xerogel formed here was studied by thermal analysis. The micrographs obtained by scanning electron microscopy (SEM) revealed the high density of the films. Such characteristics indicate the possible application of these films in solar cells.

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Section: Introductionmentioning

confidence: 99%

New Hybrid Materials Synthesized with Different Dyes by Sol-Gel Method

Gheonea

Crasmareanu

Pleşu

et al. 2017

Advances in Materials Science and Engineering

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“…Pyridine-containing D-A-type compounds have been recently studied as sensitizing dyes for DSSC. 25 In this case, pyridine functions not only as an acceptor unit but also as an anchoring unit that can coordinate with Lewis acid sites of TiO 2 to attach the dye to the TiO 2 surface; this pyridine-Ti anchor is known to facilitate electron injection from the photo-excited dye, compared with the conventional ester anchor. Based on this property, we applied the pDTSTPyT and pDTSPy polymers to DSSC.…”

Section: Applications To Opvmentioning

confidence: 99%

Synthesis and optical and photovoltaic properties of dithienosilole–dithienylpyridine and dithienosilole–pyridine alternate polymers and polymer–B(C6F5)3 complexes

Tanaka

Ohshita

Ooyama

et al. 2013

Polym J

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Donor-acceptor (D-A)-type alternate polymers were synthesized, with either dithienyldithienosilole or dithienosilole as the donor and pyridine as the acceptor, and they exhibited broad absorption peaks at approximately 520 nm. Complex formation of the polymers with B(C 6 F 5 ) 3 was examined, revealing even broader absorption peaks, with the edges red-shifted relative to the parent polymers. Blend films of the polymers and their complexes with PC 71 BM were applied as active layers in bulk heterojunction-type polymer solar cells, resulting in a power-conversion efficiency (PCE) of 0.25-1.33%. Treatment of TiO 2 electrodes with the polymer solutions led to the attachment of polymer on the TiO 2 surface. Using the resulting polymer-attached TiO 2 electrodes, dye-sensitized solar cells were fabricated with a PCE of 0.54-0.55%.

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“…72,73 Thus, as a new type of D³A dye sensitizers for DSSCs, we have designed and synthesized novel fluorescent dyes NI3NI6 with a pyridine ring as electron-withdrawinginjecting anchoring group (Scheme 3). We demonstrated that the formation of coordinate bonds between the pyridine ring of dyes NI3NI6 and the Lewis acid sites (exposed Ti n+ cations) of the TiO 2 surface leads to efficient electron injection owing to the excellent electron communication between them, rather than the formation of a bidentate bridging linkage between the conventional D³A dye sensitizers NI1 and NI2 and the Brønsted acid sites (surface-bound hydroxy groups) of the TiO 2 surface.…”

Section: ç New Type Of D-π-a Fluorescent Dyes With Pyridine Ring As Ementioning

confidence: 99%

Control of Molecular Arrangement and/or Orientation of D–π–A Fluorescent Dyes for Dye-sensitized Solar Cells

Ooyama¹,

Ohshita²,

Harima³

2012

Chemistry Letters

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Dye-sensitized solar cells (DSSCs) based on organic dyes adsorbed on TiO 2 electrodes, which emerged as a new generation of sustainable photovoltaic devices, have received considerable attention because of high incident solar light-toelectricity conversion efficiency and low cost of production. The aim of this Highlight Review is to indicate the importance of creating effective D³A dye sensitizers capable of controlling not only photophysical and electrochemical properties of the dyes themselves but also molecular arrangement and/or orientation of the dyes on TiO 2 surface to provide a good electron communication between the dye and TiO 2 electrode, for developing high-performance DSSCs.

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Dye‐Sensitized Solar Cells Based on Donor‐π‐Acceptor Fluorescent Dyes with a Pyridine Ring as an Electron‐Withdrawing‐Injecting Anchoring Group

Cited by 134 publications

References 33 publications

New Hybrid Materials Synthesized with Different Dyes by Sol-Gel Method

New Hybrid Materials Synthesized with Different Dyes by Sol-Gel Method

Synthesis and optical and photovoltaic properties of dithienosilole–dithienylpyridine and dithienosilole–pyridine alternate polymers and polymer–B(C6F5)3 complexes

Control of Molecular Arrangement and/or Orientation of D–π–A Fluorescent Dyes for Dye-sensitized Solar Cells

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