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Modyfikacje ogniw barwnikowych w kierunku poprawy ich sprawności

Schab-Balcerzak Ewa, Gnida Paweł

Przegląd Elektrotechniczny

2023

R. 99, nr 10

245--248

Artykuł przedstawia wyniki badań dotyczące wpływu przeprowadzonych modyfikacji fotoanody ogniw barwnikowych na ich odpowiedz fotowoltaiczną. Analizowano zależności pomiędzy rodzajem barwnika, koadsorbentów i rozpuszczalnika użytego do przygotowania roztworu barwnika zastosowanego do otrzymania fotoanody oraz obecności i sposobu otrzymania warstwy blokującej na parametry fotowoltaiczne wyznaczone z pomiarów charakterystyk prądowo-napięciowych.

The article presents the results of a study on the impact of the carried out modifications to the photoanode of the dye-sensitized solar cells on their photovoltaic response. The relationships between the type of dye, coadsorbents and solvent applied to prepare the dye solution to obtain the photoanode and the presence and method of preparation the blocking layer on the photovoltaic performance were analyzed using current voltage measurements.

Effect of photoanode structure and sensitization conditions on the photovoltaic response of dye-sensitized solar cells

Gnida Paweł, Slodek Aneta, Schab-Balcerzak Ewa

Opto-Electronics Review

2022

Vol. 30, No. 1

art. no. e140739

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.