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- W2564278439 abstract "Dye-sensitized solar cells (DSSCs) based on natural sensitizers have become a topic of significant research because of their urgency and importance in the energy conversion field and the following advantages: ease of fabrication, low-cost solar cell, and usage of nontoxic materials. The natural sensitizer in DSSCs is responsible for the absorption of light as well as the injection of charges to the conduction band of the semiconductor such as TiO2 nanoparticles. In this study, the chlorophyll extracted from papaya leaves was used as a natural sensitizer. Dye molecules were adsorbed by TiO2 nanoparticle surfaces when submerged in the dye solution for 24 h. The concentration of the dye solution influences both the amount of dye loading and the DSSC performance. The amount of adsorbed dye molecules by TiO2 nanoparticle was calculated using a desorption method. As the concentration of dye solution was increased, the dye loading capacity and power conversion efficiency increased. Above 90 mM dye solution concentration, however, the DSSC efficiency decreased because dye precipitated on the TiO2 nanostructure. These characteristics of DSSCs were analyzed under the irradiation of 100 mW/cm2. The best performance of DSSCs was obtained at 90 mM dye solution, with the values of Voc, Jsc, FF, and efficiency of DSSCs being 0.561 V, 0.402 mA/cm2, 41.65%, and 0.094%, respectively.The Editors are retracting this article because prior to publication, the authors requested that the manuscript be withdrawn. This information was not communicated to the publisher in a timely manner and the article should not have been published in the conference proceedings volume. The Editors regret any inconvenience this may have caused." @default.
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- W2564278439 date "2017-01-01" @default.
- W2564278439 modified "2023-10-14" @default.
- W2564278439 title "Performance enhancement of dye-sensitized solar cells (DSSCs) using a natural sensitizer" @default.
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- W2564278439 doi "https://doi.org/10.1063/1.4968376" @default.
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