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AI InsightSaf ve Cr katkılı ZnS kuantum nokta (QD) ‘larının yapısal, optiksel, manyetiksel ve fotovoltaik özellikleri
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Özet
Saf ve Cr katkılı ZnS kuantum nokta (QD) ‘larının yapısal, optiksel, manyetiksel ve fotovoltaik özellikleri
Abstract
The structural, optical, magnetic and photovoltaic properties of pure and Cr doped ZnS quantum dots (QD) were investigated at room temperature. It was confirmed by X-ray diffraction analysis that there are no mixed phases in the pure and Cr doped ZnS QDs and that the QDs have a cubic structure. It was observed that the wavelengths of the Cr-doped QDs show a blue shift compared to pure ZnS QDs with the UV-visible absorption spectrum. In other words, the bandgap of ZnS QDs indicated an increase when it was doped with Cr. With magnetic hysteresis measurements, Cr-doped ZnS QDs were shown to exhibit superparamagnetic behavior at room temperature. In addition, the photovoltaic properties of pure and Cr doped ZnS QDs were investigated by incident photon-to-current efficiency (IPCE) measurements. The results show that Cr-doped ZnS QDs can be used as sensitizers to improve the performance of solar cells.