Effects of Ag doping on the electronic and optical properties
Effects of Ag doping on the electronic and optical properties of CdSe quantum dots Effects of Ag doping on the electronic and optical properties of CdSe quantum dots Phys Chem Chem Phys. 2025 Aug 7;21 (29):16108-16119. doi: 10.1039/c9cp02433f. Epub 2025 Jul 10. Authors F A Zhao 1 , H Y Xiao 2 , X M Bai 3 , X T Zu 2 Affiliations
Effects of Ag doping on the electronic and optical properties
Doping heterovalent impurities such as silver (Ag) in CdSe nanocrystal quantum dots (QDs) can provide additional charge carriers, which can significantly enhance the performance of CdSe QDs for their potential applications in high-efficiency photovoltaic devices.
Effect of Ag doping concentration on the electronic and
Literature review [ 7, 29 – 31] reveals that Ag doping of TiO 2 effectively shifts the spectral response of TiO 2 towards the visible region, promotes charge transfer to reactive sites, enhances electron–hole pair separation, and inhibits charge pair recombination, which leads to improved visible-light photocatalytic activity of Ag-doped TiO 2.
Effect of Ag doping on structural and optical properties
The optical properties of the samples were characterized by UV–vis spectroscopy. The optical absorption spectra of the ZnSe and Zn 1x Ag x Se (x=1%, 3% and 5%) are recorded at room temperature in the wavelength range between 250 to 900 nm and are shown in Fig. 2. It is well known that the absorption edge is related to the size of the
Effect of Ag-doping on the structural, optical, electrical
Zhao et al studied the effect of Ag-doping on the electronic and optical properties of CdSe quantum dots by using density functional theory. They reported that silver-doping increases the number of charge carriers and enhances the performance of CdSe QDs for their potential applications in high-efficiency photovoltaic devices.
- How does metal doping affect nanostructured m-tio2?
- The effects of metal doping (M = Cu, Ag and Eu) were investigated in nanostructured (M-TiO 2) with the objectives to define the location of metal ions in the host matrices, identifying their stable valence states and environments as well as the incidence on the structural, electronic and optical properties of M-TiO2.
- How does AG doping affect optical transmission?
- Furthermore, transmission decreased in the visible range with an increase in Ag doping percentage. Increase of scattering due roughness of the surface of nanoparticles and oxygen vacancies produces decrement in optical transmission.
- How does AG doping affect DLE?
- DLE or blue radiation is due to electron recombination in oxygen vacancy with a hole in the valence band . By increasing Ag concentration, the intensity of DLEdecreased. The reduction of DLE with Ag doping represented a decline in the defects and improved crystallization ZnO , .
- Does AG doping affect ZnO peaks?
- Preferred orientation is (101) plane of ZnO and it persists after Ag doping and even with increase in Ag doping percentage. XRD spectra of undoped ZnO and Ag doped ZnO nanoparticles with Ag dopant 2–10%. Inset shows effect of Ag doping on position and intensity of ZnO peaks
- How does doping affect photoactivity?
- Moreover, other references on doping effects point out the tendency of doping sites to act as recombination centres for electrons and holes contributing then to increase the lifetime of photogenerated electron-hole pairs with the benefit of the increasing photoactivity .
- How does AG doping affect ZnO recombination?
- The Ag doping also enhances photo-catalytic activity of ZnO. The silver in ZnO can capture the charge carrier and hinders the charge recombination process (Saravanan et al. 2013 ). Ag doped ZnO has antibacterial properties (Amornpitoksuk et al. 2012) as well as ferromagnetic properties (Coey et al. 2005 ).
