Dergiler / Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2018 / Cilt: 8 - Sayı: 2
Cr Katkılı ZnS Kuantum Noktalarının Karakterizasyonu ve Fotovoltaik Özelliklerinin İncelenmesi
- Sayfa
- 89–97
- DOI
- —
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 quantumdots (QD) were investigated at room temperature. It was confirmed by X-ray diffraction analysis that there areno mixed phases in the pure and Cr doped ZnS QDs and that the QDs have a cubic structure. It was observedthat the wavelengths of the Cr-doped QDs show a blue shift compared to pure ZnS QDs with the UV-visibleabsorption 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 behaviorat room temperature. In addition, the photovoltaic properties of pure and Cr doped ZnS QDs were investigated byincident photon-to-current efficiency (IPCE) measurements. The results show that Cr-doped ZnS QDs can be usedas sensitizers to improve the performance of solar cells.