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

Słodek, Aneta; Gnida, Paweł; Małecki, Jan Grzegorz; Szafraniec‐Gorol, Grażyna; Chulkin, Pavel; Vasylieva, Marharyta; Nycz, Jacek E.; Libera, Marcin; Schab‐Balcerzak, Ewa

doi:10.3390/ma14123386

Cited by 2 publications

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References 66 publications

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“…At the same time, it is important to properly select both the type of co-adsorbent and its concentration for a particular dye. Among the works tracked, the increase in efficiency ranged from 0.24 to 1.55 percentage points [6,[12][13][14][15].…”

Section: Effect Of Tio2 Nanostructurementioning

confidence: 99%

“…Experimental aspects of the photoanode preparation included the determination of correlation between the applied conditions for the anode dye sensitization and the thickness of the mesoporous TiO2 layer [6][7][8][9]. The photoanode structure was modified by using various TiO2 nanostructures [10][11][12] and dyes, as well as by the addition of co-adsorbents [6,[12][13][14][15]. The oxide nanostructures are added mainly to develop a surface to which dye molecules can anchor and improve electronic conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Opto-Electronics Review

Gnida,

Slodek,

Schab-Balcerzak

2022

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This work summarises investigations focused on the photoanode impact on the photovoltaic response of dye-sensitized solar cells. This is a comparison of the results obtained by the authors' research team with literature data. The studies concern the effect of the chemical structure of the applied dye, TiO2 nanostructure, co-adsorbents addition, and experimental conditions of the anode preparation. The oxide substrates were examined using a scanning electron microscope to determine the thickness and structure of the material. The TiO2 substrates with anchored dye molecules were also tested for absorption properties in the UV-Vis light range, largely translating into current density values. Photovoltaic parameters of the fabricated devices with sandwich structure were obtained from current-voltage measurements. During tests conducted with the N719 dye, it was found that devices containing an 8.4 µm thick oxide semiconductor layer had the highest efficiency (5.99%). At the same time, studies were carried out to determine the effect of the solvent and it was found that the best results were obtained using an ACN : tert-butanol mixture (5.46%). Next, phenothiazine derivatives (PTZ-1-PTZ-6) were used to prepare the devices; among the prepared solar cells, the devices containing PTZ-2 and PTZ-3 had the highest performance (6.21 and 6.22%, respectively). Two compounds designated as Th-1 and M-1 were used to prepare devices containing a dye mixture with N719.

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Section: Effect Of Tio2 Nanostructurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Opto-Electronics Review

Gnida,

Slodek,

Schab-Balcerzak

2022

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Effect of Anchoring Unit, N-Alkyl Chain Length, and Thickness of Titanium Dioxide Layer on the Efficiency of Dye-Sensitized Solar Cells (DSSCs) and Tandem DSSCs

Amin,

Gnida,

Małecki

et al. 2024

Ind. Eng. Chem. Res.

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Dye-sensitized solar cells (DSSCs) and tandem dye-sensitized solar cells employing metal-free organic dyes are an efficient substitute for expensive nonrenewable silicon-based solar cells. Phenothiazine-based metal-free organic dyes having high molar extinction coefficient values and compatible HOMO− LUMO levels have the potential to replace dyes based on rare earth metals. A series of simple donor−acceptor phenothiazine dyes, differing in anchoring unit structure and N-alkyl chain length, were synthesized, characterized, and tested in dye-sensitized solar cells. Additionally, the effect of TiO 2 layer thickness on the photovoltaic response of fabricated cells was analyzed. The thermal, optical, and electrochemical properties of the synthesized dyes with cyanoacrylic acid or ethyl 2-(1H-tetrazol-5-yl) acetate were investigated using DSC, UV−vis, photoluminescence spectroscopy, and cyclic and differential pulse voltammetry, respectively. Based on density functional theory, the frontier molecular orbital structures and energy levels as well as the adsorption energy of the dyes on the TiO 2 surface and its size were estimated. The selected dye was applied with N719 for the preparation of tandem dyesensitized solar cells. The effects of both anchoring unit and N-alkyl chain length as well as TiO 2 thickness on device performance were demonstrated. The devices with TiO 2 layer thickness of about 9 μm, sensitized with the PTZ dyes bearing cyanoacryclic acid anchoring unit, showed better photovoltaic performance. The modification of device structure involved utilization of 2-cyano-3-(10ethyl-10H-phenothiazin-3-yl)acrylic acid (PEC) dye, blocking layer, and coadsorbent (CDCA), and the fabrication of tandem DSSCs resulted in an increase of photovoltaic efficiency to 7.34% as compared to simple (before modification) DSSCs with power conversion value of 3.73%.

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

Cited by 2 publications

References 66 publications

Opto-Electronics Review

Opto-Electronics Review

Effect of Anchoring Unit, N-Alkyl Chain Length, and Thickness of Titanium Dioxide Layer on the Efficiency of Dye-Sensitized Solar Cells (DSSCs) and Tandem DSSCs

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