Investigation of novel anthracene-bridged carbazoles as sensitizers and Co-sensitizers for dye-sensitized solar cells

Mallam, Venkataiah; Elbohy, Hytham; Qiao, Qiquan; Logue, Brian A.

doi:10.1002/er.3331

Cited by 12 publications

(8 citation statements)

References 68 publications

(94 reference statements)

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“…However, there are relatively few studies on the photoelectric properties of anthracene-based molecules. There are few metal-free sensitizers featuring a 9,10-disubsituted anthracene entity as a conjugated spacer between electron donor and acceptor moieties, and the best PCE is 7.03% [30][31][32][33]. Recently, a dye containing 2,6-conjugated anthracene showed a photoconversion efficiency of 9.11% [34] at 1 sun condition, which is the highest PCE reported by anthracene dyes.…”

Section: Introductionmentioning

confidence: 90%

Computational Prediction of Electronic and Photovoltaic Properties of Anthracene-Based Organic Dyes for Dye-Sensitized Solar Cells

Wang

Liu

et al. 2018

International Journal of Photoenergy

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Three kinds of anthracene-based organic dyes for dye-sensitized solar cells (DSSCs) were studied, and their structures are based on a push-pull framework with anthracenyl diphenylamine as the donor connected to a carboxyphenyl or carboxyphenylbromothiazole (BTZ) as the acceptor via an acetylene bridge. The photoelectric properties of the three dyes were investigated using density functional theory (DFT). The simulations indicate that the improvement of anthracene-based dyes (the addition of BTZ and the change of alkyl groups to alkoxy chains) can reduce the energy gap and produce a red shift. This structural modification also improves the light capturing and the electron injection capability, making it excellent in photoelectric conversion efficiency (PCE). In addition, twelve molecules have been designed to regulate photovoltaic performance.

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Section: Introductionmentioning

confidence: 90%

Computational Prediction of Electronic and Photovoltaic Properties of Anthracene-Based Organic Dyes for Dye-Sensitized Solar Cells

Wang

Liu

et al. 2018

International Journal of Photoenergy

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“…128 Anthracene bridged carbazoles (ML4 and ML5) were used both as sensitizers and cosensitizers in DSSC by Mallam et al This donor-π-conjugation-acceptor sensitizers alone have reduced efficiency, but using them as cosensitizers with N719 enhances efficiency to 5.74% and 6.10%, that is 10% higher. 129 Hosseinnezhad et al studied two new indigo derivatives as photosensitizers in which indoxyl group act as electron donor and acrylic and cyanoacrylic acids as electron acceptors. The dye having cyanoacrylic acid got 3.45% efficiency while the other with acrylic acid acceptors attained 3.11% only.…”

Section: Organic Dyesmentioning

confidence: 99%

“…Nearly seven thiophene derivative dyes were synthesized and obtained PCE's in the range of 5.2% to 5.6% 128 . Anthracene bridged carbazoles (ML4 and ML5) were used both as sensitizers and cosensitizers in DSSC by Mallam et al This donor‐π‐conjugation‐acceptor sensitizers alone have reduced efficiency, but using them as cosensitizers with N719 enhances efficiency to 5.74% and 6.10%, that is 10% higher 129 . Hosseinnezhad et al studied two new indigo derivatives as photosensitizers in which indoxyl group act as electron donor and acrylic and cyanoacrylic acids as electron acceptors.…”

Section: Revamping Of Photoanodementioning

confidence: 99%

Efficient charge collection of photoanodes and light absorption of photosensitizers: A review

Pallikkara

Kala

2020

Int J Energy Res

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Summary During the recent period of time, dye sensitized solar cells (DSSCs) have become an exciting invention to meet our energy demands. Its reasonable cost of production and easy fabrication make it a powerful competent to the conventional solar cells. But non‐achievement of expected efficiency is the key challenge faced by the scientific society. To overcome this, boundless research is going on the revamping of DSSC. Among the four chief parts of DSSC, the photoanodes gain more attention due to its dual function. Scilicet, it act as a charge carrier and as a surface for dye adsorption as well. Hence photoanode modification plays a crucial role in enhancing the power conversion efficiencies of DSSCs. It comprises of wide bandgap semiconducting metal oxides, among which TiO2 stands out with higher efficiency. Likewise in the case of photosensitizers, metal complex based dyes (mainly ruthenium based) take the lead in augmented efficiency. This paper critically reviews the work on all the metal oxides used as photoanode materials, comparing their band gap with the best efficiencies reported for each and analyzing their advantages and disadvantages. An overview of the performance of DSSCs based on different metal atom doped metal oxide photoanode, incorporation of various carbonaceous materials and different passivating agents has been included. Also, the modification in the photosensitizer has been discussed, examining the reports on organometallics based dyes and metal free organic dyes.

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“…This indicates that the stability of the sheet-like CoS 2 CE was analogous to that of the standard Pt CE, and have the potential to be engaged as low cost replacements for Pt CEs in the construction of highly efficient and stable DSSCs. Figure 6b, show the distribution of device performance for 30 devices are shown as a histogram [20,37,38]. Schematic illustration of the electron transfer process in the DSSCs assembled with phthaloylchitosan-based gel-polymer electrolyte and a CoS2 CE is shown in Figure 7.…”

Section: Photovoltaic Performance Of the Dsscsmentioning

confidence: 99%

Fabrication of Cost-Effective Dye-Sensitized Solar Cells Using Sheet-Like CoS2 Films and Phthaloylchitosan-Based Gel-Polymer Electrolyte

et al. 2018

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Platinum-free counter electrodes (CE) were developed for use in efficient and cost-effective energy conversion devices, such as dye-sensitized solar cells (DSSCs). Electrochemical deposition of CoS 2 on fluorine-doped tin oxide (FTO) formed a hierarchical sheet-like structured CoS 2 thin film. This film was engaged as a cost-effective platinum-free and high-efficiency CE for DSSCs. High stability was achieved using a phthaloychitosan-based gel-polymer electrolyte as the redox electrolyte. The electrocatalytic performance of the sheet-like CoS 2 film was analyzed by electrochemical impedance spectroscopy and cyclic voltammetry. The film displayed improved electrocatalytic behavior that can be credited to a low charge-transfer resistance at the CE/electrolyte boundary and improved exchange between triiodide and iodide ions. The fabricated DSSCs with a phthaloychitosan-based gel-polymer electrolyte and sheet-like CoS 2 CE had a power conversion efficiency (PCE, η) of 7.29% with a fill factor (FF) of 0.64, J sc of 17.51 mA/cm 2 , and a V oc of 0.65 V, which was analogous to that of Pt CE (η = 7.82%). The high PCE of the sheet-like CoS 2 CE arises from the enhanced FF and J sc , which can be attributed to the abundant active electrocatalytic sites and enhanced interfacial charge-transfer by the well-organized surface structure.

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Investigation of novel anthracene-bridged carbazoles as sensitizers and Co-sensitizers for dye-sensitized solar cells

Cited by 12 publications

References 68 publications

Computational Prediction of Electronic and Photovoltaic Properties of Anthracene-Based Organic Dyes for Dye-Sensitized Solar Cells

Computational Prediction of Electronic and Photovoltaic Properties of Anthracene-Based Organic Dyes for Dye-Sensitized Solar Cells

Efficient charge collection of photoanodes and light absorption of photosensitizers: A review

Fabrication of Cost-Effective Dye-Sensitized Solar Cells Using Sheet-Like CoS2 Films and Phthaloylchitosan-Based Gel-Polymer Electrolyte

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