D-π-A Porphyrin Employing an Indoline Donor Group for High Efficiency Dye-Sensitized Solar Cells

Pellejà, Laia; Kumar, Challuri Vijay; Clifford, John N.; Palomares, Emilio

doi:10.1021/jp411715n

Cited by 40 publications

(28 citation statements)

References 22 publications

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“…Finally, indoline-conjugated units have been considered, producing DSSCs with improved photocollection over a wide range of wavelengths (350–700 nm, with IPCE values of 80%, surpassing those of benchmark dye YD2-oC8) and remarkable PCEs (Figure 11H) (Pellejà et al, 2014; Li et al, 2016). The indoline motifs show nonplanar geometry enabling to endow the dye molecules with a proper steric hindrance to reduce the molecular aggregation.…”

Section: A4 β-Pyrrolic Substituted Znii Porphyrins As Light Harvestersmentioning

confidence: 99%

Efficient Sunlight Harvesting by A4 β-Pyrrolic Substituted ZnII Porphyrins: A Mini-Review

et al. 2019

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Dye-Sensitized Solar Cells (DSSCs) are a highly promising alternative to conventional photovoltaic silicon-based devices, due to the potential low cost and the interesting conversion efficiencies. A key-role is played by the dye, and porphyrin sensitizers have drawn great interest because of their excellent light harvesting properties mimicking photosynthesis. Indeed, porphyrins are characterized by strong electronic absorption bands in the visible region up to the near infrared and by long-lived π * singlet excited states. Moreover, the presence of four meso and eight β-pyrrolic positions allows a fine tuning of their photoelectrochemical properties through structural modification. Trans -A 2 BC push–pull Zn II porphyrins, characterized by a strong and directional electron excitation process along the push–pull system, have been extensively investigated. On the other hand, A 4 β-pyrrolic substituted tetraaryl Zn II porphyrins, which incorporate a tetraaryl porphyrinic core as a starting material, have received lower attention, even if they are synthetically more attractive and show several advantages such as a more sterically hindered architecture and enhanced solubility in most common organic solvents. The present contribution intends to review the most prominent A 4 β-substituted Zn II porphyrins reported in the literature so far for application in DSSCs, focusing on the strategies employed to enhance the light harvesting capability of the dye and on a comparison with meso -substituted analogs.

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Section: A4 β-Pyrrolic Substituted Znii Porphyrins As Light Harvestersmentioning

confidence: 99%

Efficient Sunlight Harvesting by A4 β-Pyrrolic Substituted ZnII Porphyrins: A Mini-Review

et al. 2019

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“…It was previously reported that continuous light exposure provides a way to signicantly and irreversibly improve solar cell efficiency. 34 TiO 2 works as a photobleaching catalyst, which promotes photocatalytic oxidation of the dye. 35 According to the literature, it is likely, that there is a weak interaction between the nitro group and the TiO 2 surface when d and d 0 are adsorbed via the carboxylate group.…”

Section: Nitro Effectmentioning

confidence: 99%

Dye-sensitized solar cells using fluorone-based ionic liquids with improved cell efficiency

Pinto

Parola

Leal³

et al. 2019

Sustainable Energy Fuels

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“…Recently, researchers started to put some eggs to the other bucket (Yang et al, 2014 ; Qi et al, 2018 ). For example, some electron-donating groups in organic sensitizer were successfully applied in porphyrin, such as N-annulated perylene ( 26 in Figure 4 ) (Jiao et al, 2011 ; Luo et al, 2013 , 2016 ), 2-diphenylaminothiophene ( 23 in Figure 4 ) (Wang et al, 2014d ), indoline ( 24 in Figure 4 ) (Pellej et al, 2014 ), phenothiazine ( 31 in Figure 4 ) (Xie et al, 2015 ), and even ferrocene (van der Salm et al, 2015 ). Some concepts from low-band-gap polymer were successfully applied in adjusting the absorption area and energy alignment of the porphyrins, such as weak donor-strong acceptor (Zhou et al, 2012 ; Bai et al, 2018 ; Lin et al, 2018 ; Xie et al, 2018 ), which will be discussed in the following part.…”

Section: The Development Of Porphyrins For Solar Cell Applicationmentioning

confidence: 99%

Push-Pull Zinc Porphyrins as Light-Harvesters for Efficient Dye-Sensitized Solar Cells

Liu

Wang

2018

Front. Chem.

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Dye-sensitized solar cell (DSSC) has been attractive to scientific community due to its eco-friendliness, ease of fabrication, and vivid colorful property etc. Among various kinds of sensitizers, such as metal-free organic molecules, metal-complex, natural dyes etc., porphyrin is one of the most promising sensitizers for DSSC. The first application of porphyrin for sensitization of nanocrystaline TiO2 can be traced back to 1993 by using [tetrakis(4-carboxyphenyl) porphyrinato] zinc(II) with an overall conversion efficiency of 2.6%. After 10 years efforts, Officer and Grätzel improved this value to 7.1%. Later in 2009, by constructing porphyrin sensitizer with an arylamine as donor and a benzoic acid as acceptor, Diau and Yeh demonstrated that this donor-acceptor framwork porphyrins could attain remarkable photovoltaic performance. Now the highest efficiencies of DSSC are dominated by donor-acceptor porphyrins, reaching remarkable values around 13.0% with cobalt-based electrolytes. This achievement is largely contributed by the structural development of donor and acceptor groups within push-pull framwork. In this review, we summarized and discussed the developement of donor-acceptor porphyrin sensitizers and their applications in DSSC. A dicussion of the correlation between molecular structure and the spectral and photovoltaic properties is the major target of this review. Deeply dicussion of the substitution group, especially on porphyrin's meso-position were presented. Furthermore, the limitations of DSSC for commercialization, such as the long-term stability, sophisticated synthesis procedures for high efficiency dye etc., have also been discussed.

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D-π-A Porphyrin Employing an Indoline Donor Group for High Efficiency Dye-Sensitized Solar Cells

Cited by 40 publications

References 22 publications

Efficient Sunlight Harvesting by A4 β-Pyrrolic Substituted ZnII Porphyrins: A Mini-Review

Efficient Sunlight Harvesting by A4 β-Pyrrolic Substituted ZnII Porphyrins: A Mini-Review

Dye-sensitized solar cells using fluorone-based ionic liquids with improved cell efficiency

Push-Pull Zinc Porphyrins as Light-Harvesters for Efficient Dye-Sensitized Solar Cells

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