In this work, PSC with three different HTL dopants have been analyzed. By means of current-voltage characterization under light and dark conditions, EQE characterization in continuous, and transmittance spectral characterization we demonstrate that: (i) PSCs show an EQE peak efficiency in excess of 80% with a sharp edge at 550 nm, (ii) they show hysteresis in their electrical behavior, possibly due to ionic conduction; (iii) they show a good stability to reverse voltages down to -2.25 V. Being transparent at wavelengths above 550nm makes them suitable for agrivoltaic applications.
KEYWORDS: Dye sensitized solar cells, In vitro testing, Absorbance, Solar cells, Absorption, Visible radiation, Dysprosium, Magnesium, Ultraviolet radiation, In vivo imaging
In vitro grown shoots cultures (Prunus salicina × Prunus persica), elicited by methyl jasmonate (MJ), are reported here for the first time to prepare a natural dye for dye-sensitized solar cells (DSSC). Redox properties of the dye, its photostability, and light absorption properties suggested it as a candidate as natural photosensitizers for TiO2 photoelectrodes. Redox properties of the dye influence the DSSC production of photocurrent, thus three antioxidant assays were performed in order to characterize the antioxidant potential of this dye. The dye exhibited a high antioxidant activity in all the assays performed. Photostability assay revealed that the dye was quite stable to light. The power conversion efficiency that we obtained (0.53%) was comparable to the data by other authors with anthocyanins-based dyes from in vivo grown plants. Finally, we compared the dye with the partially purified one as photosensitizer in DSSC. The results indicated that the raw pigment from in vitro shoot cultures of P. salicina × P. persica elicited with MJ can be proposed without the needing of any other chemicals, thermal or purification process, or pH adjustments, as a dye for natural sensitized solar cells.
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