Synthesis and Characterization of Donor–π‐Acceptor‐Based Porphyrin Sensitizers: Potential Application of Dye‐Sensitized Solar Cells

Sreenivasu, Mareedu; Suzuki, Akira; Adachi, Masayoshi; Kumar, Challuri Vijay; Srikanth, B.; Rajendar, S.; Rambabu, D.; Kumar, Rangaraju Satish; Mallesham, P.; Rao, Narayanam V.; Kumar, M. Suresh; Reddy, Paidi Yella

doi:10.1002/chem.201403660

Cited by 22 publications

(15 citation statements)

References 51 publications

(30 reference statements)

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“…27,30,31 However, previous work has shown that thiophene, rather than furan, when incorporated as π-bridges of porphyrin dyes results in better PCEs, presumably due to the more electron withdrawing character and/or improved interactions between the dye and TiO 2 due to thiophene moiety. [32][33][34][35] Results and discussion…”

Section: Introductionmentioning

confidence: 99%

An investigation of the roles furan versus thiophene π-bridges play in donor–π-acceptor porphyrin based DSSCs

et al. 2018

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Dye-sensitized solar cells (DSSCs) continue to attract interest due to their lower cost production compared to silicon based solar cells and their improving power conversion efficiencies. Porphyrin-based sensitizers have become an important sub-class due to their strong absorption characteristics in the visible region, convenient modulation of properties through synthetic manipulation and class-leading power conversion efficiencies. In this article, we report the synthesis and characterization of two porphyrin-based dyes and their application as sensitizers in DSSCs. A thiophene and a furan moiety have been incorporated into the push-pull architecture as a π-bridge, allowing the systematic investigation of how these moieties influence the physical properties of the dyes and the performance of their resulting DSSCs. A significant difference in PCEs has been observed, with the furan containing dye (PorF, PCE = 4.5%) being more efficient than the thiophene-based analogue (PorT, PCE = 3.6%) in conjunction with the iodide/triiodide redox electrolyte.

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Section: Introductionmentioning

confidence: 99%

An investigation of the roles furan versus thiophene π-bridges play in donor–π-acceptor porphyrin based DSSCs

et al. 2018

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“…To deeply understand our experimental results, the energies and spatial structures of LYD ‐dyes’ molecular orbitals were computerized by the hybrid DFT method on the level of B3LYP/6‐31G(d)/LANL2DZ . The electron distributions of HOMO‐1, HOMO, LUMO and LUMO+1 for these Zn‐porphyrin dyes are shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…The conduction band of TiO 2 is located between LUMOs and HOMOs of dyes to ensure the effective electron injection. Although two carboxyl groups of LYD‐4 show same electron distributions, one of them displays large dihedral angle (57.7°, Figure ) to the conjugated π‐plane and should be free of binding to TiO 2 surface, which would carries photoelectrons back to electrolyte leading to the lowest J sc . In contrast, both carboxylic and hydroxyl groups of LYD‐2 and LYD‐5 can transfer electrons resulting in the obvious enhancement of photovoltaic conversion efficiency of devices.…”

Section: Resultsmentioning

confidence: 99%

Substituted and Anchoring Groups Improve the Efficiency of Dye-Sensitized Solar Cells

et al. 2017

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A series of new Zn-porphyrin dyes (LYD-1~5) with various substituted and anchoring groups have been designed, fabricated and fully characterized by nuclear magnetic resonance (NMR), ultraviolet visible (UV-vis), and High Resolution Mass spectroscopy (HRMS). The solar cells sensitized by new dyes have been systematically investigated by photoelectrochemical experiments of current density À voltage (J À V), incident monochromatic photon-to-electron conversion efficiency (IPCE) and electrochemical impedance spectra (EIS). The results show that the performance of DSC devices is deeply affected by the substituted and anchoring groups of dyes. The best solar cell sensitized by LYD-5 with alkoxyl donors and salicylic acid exhibits excellent photovoltaic conversion efficiency of 8.5% compared with 7.7% of YD2-o-C8-based solar cell under the same conditions. Their structural features and electron distribution of HOMOs and LUMOs are calculated computationally using a DFT method at the level of B3LYP/6-31G(d)/LANL2DZ.[a] Dr.

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“…After the first report by Wang etc ., a variety of thiophene conjugated rigid acceptors have been created (Sreenivasu et al, 2014 ; Zhang M.-D. et al, 2014 ). Interesting to note that furan and bithiophene linked acceptor functionated porphyrins exhibit broader absorption area than that of thiophene but dramatically dropped performance (2.8 and 1.4%).…”

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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Synthesis and Characterization of Donor–π‐Acceptor‐Based Porphyrin Sensitizers: Potential Application of Dye‐Sensitized Solar Cells

Cited by 22 publications

References 51 publications

An investigation of the roles furan versus thiophene π-bridges play in donor–π-acceptor porphyrin based DSSCs

An investigation of the roles furan versus thiophene π-bridges play in donor–π-acceptor porphyrin based DSSCs

Substituted and Anchoring Groups Improve the Efficiency of Dye-Sensitized Solar Cells

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

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