Influence of Oxidized Graphene Quantum Dots as Photosensitizers.

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ID: 67417
2020
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Abstract
In this study, we successfully prepared oxidatively functionalized graphene quantum dots (GQDs) to engineer the absorption band of a photoanode. By employing a facile hydrothermal process, we demonstrate the degree of intrinsic oxidation at the polar carbene edges of the GQDs, using Raman spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy. The cyclic voltammetry results show that oxygen functional groups on the GQDs can change the highest occupied molecular orbital and lowest unoccupied molecular orbital levels. Dye-sensitized solar cells, with the GQDs dissolved in the dye, were evaluated in terms of their characteristics and conversion efficiencies. The GQDs dissolved in the dye were easily attachable to TiO₂ porous particles, and also contributed to the photoelectric conversion efficiency.
Reference Key
yang2020influencejournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yang, Woosung;Park, Ill-Woo;Lee, Jeong Min;Choi, Hyonkwang;
Journal Journal of nanoscience and nanotechnology
Year 2020
DOI
10.1166/jnn.2020.17207
URL
Keywords
natural dye betacyanin dye sensitized solar cells (dssc's) prickly pear extract tio2 photoanode

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