Enhanced performance of dye-sensitized solar cells based on a dual anchored diphenylpyranylidene dye and N719 co-sensitization

Wang, Xinxin; Bolag, Altan; Wu, Yun; Du, Yiqun; Eerdun, Chaolu; Zhang, Xiaoxin; Bao, Ting; Ning, Jun; Alata, Hexig; Ojiyed, Tegus

doi:10.1016/j.molstruc.2020.127694

Cited by 40 publications

(18 citation statements)

References 25 publications

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“…The DSC devices based on co-sensitization of N719 and the three isomer dyes were fabricated according to our previous report. 28 When three diphenylpyran dyes were applied as co-sensitizers through a cocktail procedure, the efficiencies of the DSCs dramatically decreased to 3.49%, 4.02% and 2.50% for the DO, DM and DP co-sensitization systems, respectively. As the cocktail solutions were prepared by mixing N719 EtOH solution and co-sensitizers in chloroform solution, an adverse effect on the dye cosensitization ratios and dye dissolution may lead to insufficient adsorption of N719 on the TiO 2 electrode.…”

Section: Photovoltaic Performancementioning

confidence: 99%

“…Synthesis of the diphenylpyran dyes (Scheme 1) was completed according to our previous reports. [26][27][28] The general synthesis of the diphenylpyran dyes was accomplished in mainly three steps as shown in Scheme 1. Tributyl(2,6-diphenyl-4H-pyran-4-yl) phosphonium tetrauoroborate 1a was prepared following the literature procedures.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

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The influence of three diphenylpyran isomer co-sensitizers with different sterical structures on N719-based dye sensitized solar cells

et al. 2020

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Section: Photovoltaic Performancementioning

confidence: 99%

Section: Synthesis and Characterizationmentioning

confidence: 99%

The influence of three diphenylpyran isomer co-sensitizers with different sterical structures on N719-based dye sensitized solar cells

et al. 2020

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“…Co-sensitization by adding co-adsorbing agents to the dye bath during the sensitization process is also a broad class of methods commonly used to inhibit dye aggregation. Cholic acid (CA), deoxycholic acid (DCA), chenodeoxycholic acid (CDCA) and their derivatives are commonly used as co-adsorbents [ 127 , 128 , 129 ]. The co-adsorbents, with fewer restrictions and frequent use, can not only effectively inhibit the formation of the undesired aggregates to reduce excited state quenching [ 130 , 131 , 132 ], but also cover the exposed TiO 2 surface between dyes, which could protect the dye-TiO 2 working electrode from electrolyte attack, and then reduce charge recombination [ 133 , 134 ].…”

Section: Dye Aggregation In Dsscsmentioning

confidence: 99%

Cause, Regulation and Utilization of Dye Aggregation in Dye-Sensitized Solar Cells

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Wang

2020

Molecules

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As an important member of third generation solar cell, dye-sensitized solar cells (DSSCs) have the advantages of being low cost, having an easy fabrication process, utilizing rich raw materials and a high-power conversion efficiency (PCE), prompting nearly three decades as a research hotspot. Recently, increasing the photoelectric conversion efficiency of DSSCs has proven troublesome. Sensitizers, as the most important part, are no longer limited to molecular engineering, and the regulation of dye aggregation has become a widely held concern, especially in liquid DSSCs. This review first presents the operational mechanism of liquid and solid-state dye-sensitized solar cells, including the influencing factors of various parameters on device efficiency. Secondly, the mechanism of dye aggregation was explained by molecular exciton theory, and the influence of various factors on dye aggregation was summarized. We focused on a review of several methods for regulating dye aggregation in liquid and solid-state dye-sensitized solar cells, and the advantages and disadvantages of these methods were analyzed. In addition, the important application of quantum computational chemistry in the study of dye aggregation was introduced. Finally, an outlook was proposed that utilizing the advantages of dye aggregation by combining molecular engineering with dye aggregation regulation is a research direction to improve the performance of liquid DSSCs in the future. For solid-state dye-sensitized solar cells (ssDSSCs), the effects of solid electrolytes also need to be taken into account.

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“…The development of new photoanodes with increased dye absorption and charge transfer, while at the same time extending the absorption of incident photons and injection of electrons into the semiconductor conduction band, is the way to obtain the highest efficiency of DSSC systems [ 45 ]. Currently, from the point of view of used dyes, the DSSCs can be categorized as based on metal-containing sensitizer (usually commercial, such as N3, N719, N749 based on Ru or YD2 with Zn [ 46 , 47 , 48 ]) and based on newly developed metal-free dye [ 49 , 50 , 51 , 52 , 53 , 54 , 55 ].…”

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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Enhanced performance of dye-sensitized solar cells based on a dual anchored diphenylpyranylidene dye and N719 co-sensitization

Cited by 40 publications

References 25 publications

The influence of three diphenylpyran isomer co-sensitizers with different sterical structures on N719-based dye sensitized solar cells

The influence of three diphenylpyran isomer co-sensitizers with different sterical structures on N719-based dye sensitized solar cells

Cause, Regulation and Utilization of Dye Aggregation in Dye-Sensitized Solar Cells

Impact of TiO2 Nanostructures on Dye-Sensitized Solar Cells Performance

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