Molecular geometry, synthesis and photovoltaic performance studies over 2-cyanoacetanilides as sensitizers and effective co-sensitizers for DSSCs loaded with HD-2

Elmorsy, Mohamed R.; Abdel‐Latif, Ehab; Badawy, Safa A.; Fadda, Ahmed A.

doi:10.1016/j.jphotochem.2019.112239

Cited by 24 publications

(4 citation statements)

References 38 publications

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“…These compounds have multimolecular structures and different parts that act as acceptors and donors [18]. Cyanoacetamide compounds are considered an important class of compounds that have a wide range of photovoltaic activities and are applied in DSSCs [19].…”

Section: Introductionmentioning

confidence: 99%

Simple organic dyes containing multiple anchors as effective co‐sensitizers for DSSCs loaded with Ru (II) complex N‐719

Aldusi

Fadda

Ismail

et al. 2022

Applied Organom Chemis

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In this work, we report a comprehensive photovoltaic investigation of eight pure organics, structurally simple, and low‐cost 2‐cyano‐N‐thiazolyacrylamide dyes (AM‐1‐8) co‐sensitizers for dye‐sensitized solar cells (DSSCs) with the standard Ru (II) dye (N‐719). A co‐sensitization strategy has been applied for enhancing the performance of DSSCs wherein a Ru (II) metal complex is combined with a simple type of the designed organic metal‐free dyes (AM‐1‐8). The co‐sensitization by the absorption of co‐sensitizers AM‐1‐8 leads to a broader light‐harvesting ability (300–750 nm) and scored photovoltaic efficiency at a range of 6.08%–9.30%. Upon co‐sensitization, the device made of bis(2‐cyanoacetamide) co‐sensitizer AM‐7 system yielded the highest power conversion efficiency (PCE) = 9.30% with JSC = 20.96 mA/cm2, VOC = 0.73 eV, and FF = 60.78 that outperformed the standard dye (N‐719). N‐719 dye only showed PCE of 7.30% with JSC = 18.68 mA/cm2, VOC = 0.64 eV, and FF = 61%. The great enhancement of the effect of the co‐sensitizer AM‐7 on the N‐719 can be related to the enhancement of both short current density (JSC) and open circuit voltage (VOC). The greater JSC value can be attributed to the maximum dye loading value of this dye on the TiO2 surface (3.76 × 10−5/mol cm−2) as a result of the presence of bis‐anchoring function within the dye molecule. The increase in the VOC value can be attributed to its highest recombination resistance because of the multi‐anchoring groups, which was confirmed by electrochemical impedance spectroscopy (EIS). Theoretical density functional theory (DFT) and highest occupied molecular orbital (HOMO)‐ lowest unoccupied molecular orbital (LUMO) energy were performed to study the electron density distribution between donor and acceptor moieties. All the multi‐anchoring functions presented in bis(2‐cyanoacetamide) and 2‐cyanacrylamide co‐sensitizers demonstrate promising co‐sensitizers for excellent photovoltaic performance response on the standard dye (N‐719).

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Section: Introductionmentioning

confidence: 99%

Simple organic dyes containing multiple anchors as effective co‐sensitizers for DSSCs loaded with Ru (II) complex N‐719

Aldusi

Fadda

Ismail

et al. 2022

Applied Organom Chemis

Self Cite

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“…It should be noted that the manufacturing of metal-containing dyes is expensive and time-consuming and requires a complicated purification process [ 56 , 57 , 58 , 59 ]. Intensive work is underway on an alternative for metal-dyes, organic sensitizers.…”

Section: Introductionmentioning

confidence: 99%

“…Research has confirmed that using two or more sensitizers in a co-sensitization system is a highly effective solution for light-harvesting efficiency in DSSCs [ 51 , 60 ]. Moreover, co-sensitization with organic dyes allows to reduce the amount of metal-containing dyes N719 dye applied and may reduce the cost of device preparation [ 57 , 65 ]. It should be also stressed that co-sensitization may improve the photovoltaic performance of solar cells [ 60 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of TiO2 Nanostructures on Dye-Sensitized Solar Cells Performance

et al. 2021

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The effect of TiO2 nanostructures such as nanoparticles, nanowires, nanotubes on photoanode properties, and dye-sensitized solar cells photovoltaic parameters were studied. The series of dye-sensitized solar cells based on two dyes, that is, commercially N719 and synthesized 3,7′-bis(2-cyano-1-acrylic acid)-10-ethyl-phenothiazine were tested. Additionally, the devices containing a mixture of this sensitizer and chenodeoxycholic acid as co-adsorbent were fabricated. The amount of adsorbed dye molecules to TiO2 was evaluated. The prepared photoanodes with different TiO2 nanostructures were investigated using UV-Vis spectroscopy, optical, atomic force, and scanning electron microscopes. Photovoltaic response of constructed devices was examined based on current-voltage characteristics and electrochemical impedance spectroscopy measurements. It was found that the highest UV-Vis absorption exhibited the photoanode with nanotubes addition. This indicates the highest number of sensitizer molecules anchored to the titanium dioxide photoanode, which was subsequently confirmed by dye-loading tests. The highest power conversion efficiency was (6.97%) for solar cell containing nanotubes and a mixture of the dyes with a co-adsorbent.

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“…Currently, metal-containing complexes such as N3, N719, N749 based on Ru or YD2 with Zn are mainly utilized to prepare dye-sensitized solar cells [ 9 , 10 , 11 , 12 ]. However, metal-containing dyes are expensive to obtain and the purification process is very complicated and tedious [ 13 , 14 , 15 , 16 ]. Therefore, research is being carried out to reduce the use of sensitizers containing metal atoms by looking for new metal-free dyes that are cheaper and easier to synthesize.…”

Section: Introductionmentioning

confidence: 99%

New Benzo[h]quinolin-10-ol Derivatives as Co-sensitizers for DSSCs

et al. 2021

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New benzo[h]quinolin-10-ol derivatives with one or two 2-cyanoacrylic acid units were synthesized with a good yield in a one-step condensation reaction. Chemical structure and purity were confirmed using NMR spectroscopy and elemental analysis, respectively. The investigation of their thermal, electrochemical and optical properties was carried out based on differential scanning calorimetry, cyclic voltammetry, electronic absorption and photoluminescence measurements. The analysis of the optical, electrochemical and properties was supported by density functional theory studies. The synthesized molecules were applied in dye-sensitized solar cells as sensitizers and co-sensitizers with commercial N719. The thickness and surface morphology of prepared photoanodes was studied using optical, scanning electron and atomic force microscopes. Due to the utilization of benzo[h]quinolin-10-ol derivatives as co-sensitizers, the better photovoltaic performance of fabricated devices compared to a reference cell based on a neat N719 was demonstrated. Additionally, the effect of co-adsorbent chemical structure (cholic acid, deoxycholic acid and chenodeoxycholic acid) on DSSC efficiency was explained based on the density functional theory.

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Molecular geometry, synthesis and photovoltaic performance studies over 2-cyanoacetanilides as sensitizers and effective co-sensitizers for DSSCs loaded with HD-2

Cited by 24 publications

References 38 publications

Simple organic dyes containing multiple anchors as effective co‐sensitizers for DSSCs loaded with Ru (II) complex N‐719

Simple organic dyes containing multiple anchors as effective co‐sensitizers for DSSCs loaded with Ru (II) complex N‐719

Impact of TiO2 Nanostructures on Dye-Sensitized Solar Cells Performance

New Benzo[h]quinolin-10-ol Derivatives as Co-sensitizers for DSSCs

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