We report on a theoretical investigation on the influence of different wavelength scale periodic grating architectures on dye sensitized solar cell (DSC). A broadband absorption enhancement is expected in such solar cells thanks to diffraction effects produced by these structures. Their optimal size has been analyzed in terms of pitch grating, height and position along the solar cell layers. Numerical simulations indicate that nanostructuring the interface between the active and the electrolyte layer by integrating a dielectric grating produces an absorption enhancement of 23.4%. The presented results have been also evaluated in view of feasible realistic structures compatible with low cost soft lithographic techniques.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.20.00A888 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Boosting Light-Driven CO2 Conversion into CO by a Polypyridine Iron(II) Catalyst Using an Organic Sensitizer.
ChemSusChem
January 2025
Universita degli Studi di Ferrara, Dipartimento di Scienze Chimiche e Farmaceutiche, Via Borsari 46, 44121, Ferrara, ITALY.
Direct photochemical conversion of CO2 into a single carbon-based product currently represents one of the major issues in the catalysis of the CO2 reduction reaction (CO2RR). In this work, we demonstrate that the combination of an organic photosensitizer with a heptacoordinated iron(II) complex allows to attain a noble-metal-free photochemical system capable of efficient and selective conversion of CO2 into CO upon light irradiation in the presence of N,N-diisopropylethylamine (DIPEA) and 2,2,2-trifluoroethanol (TFE) as the electron and proton donor, respectively, with unprecedented performances (ΦCO up to 36%, TONCO > 1000, selectivity > 99%). As shown by transient absorption spectroscopy studies, this can be achieved thanks to the fast rates associated with the electron transfer from the photogenerated reduced dye to the catalyst, which protect the dye from parallel degradation pathways ensuring its stability along the photochemical reaction.
View Article and Find Full Text PDFChanges in Lysine Methylation Contribute to the Cytotoxicity of Curcumin in Colon Cancer Cells.
Molecules
January 2025
Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
Epigenetic abnormalities play a critical role in colon carcinogenesis, making them a promising target for therapeutic interventions. In this study, we demonstrated that curcumin reduces colon cancer cell survival and that a decrease in lysine methylation was involved in such an effect. This correlated with the downregulation of methyltransferases EZH2, MLL1, and G9a, in both wild-type p53 (wtp53) HCT116 cells and mutant p53 (mutp53) SW480 cells, as well as SET7/9 specifically in wtp53 HCT116 cells.
View Article and Find Full Text PDFHybrids of Deep HOMO Organic Cyanoacrylic Acid Dyes and Graphene Nanomaterials for Water Splitting Photoanodes.
Materials (Basel)
January 2025
Departamento de Química Orgánica, Universidad de Zaragoza, 50009 Zaragoza, Spain.
Dye-sensitization is a promising strategy to improve the light absorption and photoactivity abilities of wide-bandgap semiconductors, like TiO. For effective water-splitting photoanodes with no sacrificial agents, the electrochemical potential of the dye must exceed the thermodynamic threshold needed for the oxygen evolution reaction. This study investigates two promising organic cyanoacrylic dyes, designed to meet that criterion by means of theoretical calculations.
View Article and Find Full Text PDFDye-Sensitized Solar Cells with Modified TiO Scattering Layer Produced by Hydrothermal Method.
Materials (Basel)
January 2025
Department of Materials Science and Engineering, National Dong Hwa University, Hualien 974301, Taiwan.
This work proposes dye-sensitized solar cells (DSSCs) with various photoanode designs. A hydrothermal method is used to synthesize hydrangea-shaped TiO (H-TiO) aggregates. The X-ray diffraction (XRD) pattern of H-TiO reveals only an anatase phase.
View Article and Find Full Text PDFRe-Sensitization of Resistant Ovarian Cancer SKOV3/CDDP Cells to Cisplatin by Curcumin Pre-Treatment.
Int J Mol Sci
January 2025
Laboratory of Molecular Oncobiology, Institute of Gene Biology, Russian Academy of Sciences, 34/5 Vavilov Street, 119334 Moscow, Russia.
A major challenging problem facing effective ovarian cancer therapy is cisplatin resistance. Re-sensitization of cisplatin-resistant ovarian cancer cells to cisplatin (CDDP) has become a critical issue. Curcumin (CUR), the most abundant dietary polyphenolic curcuminoids derived from turmeric (), has achieved previously significant anti-cancer effects against human ovarian adenocarcinoma SKOV-3/CDDP cisplatin-resistant cells by inhibition the gene expression of the antioxidant enzymes (, , , and ), transcription factor and signaling pathway (//).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!