Luminescence and Raman scattering properties of Ag-doped ZnO films

Abstract

Ag-doped ZnO films were prepared by direct current reactive magnetron sputtering using a zinc target with various Ag-chips attached. The influence of Ag doping on the microstructure, photoluminescence and Raman scattering of ZnO films were systematically investigated. The results indicate that ZnO films doped with Ag can still retain a wurtzite structure, although the c-axis as preferred orientation is decreased by Ag doping. The near band edge emission of ZnO film can be enhanced by Ag doping with a concentration of 1.6–2.8 at.% and quench with a further increase in the Ag concentration. A local vibrational mode at 411 cm−1 induced by Ag dopant can be observed in the Raman spectra of the Ag-doped ZnO films, which might be used as an indication of Ag incorporation into the ZnO lattice.

Structural, optical, and magnetic characterization of monodisperse Fe-doped ZnO nanocrystals

“…The intensity of the later mode was enhanced with a rise in the concentration of dopant. These modes were also reported by Wang et al 14 The phonon mode at 330 cm −1 is due to a second order spectral feature originated from the zone-boundary phonons of 2-E 2 ͑M͒ for ZnO. 15 The intensity of the Raman modes located at 295, 505, 622, and 673 cm −1 decreased with a rise in the concentration of the dopant.…”

Giant piezoresponse and promising application of environmental friendly small-ion-doped ZnO

“…Co-doping can induce the room-temperature ferromagnetism in Co-doped ZnO films [30][31][32][33][34][35]. Doping with V, Cu and Ag can improve the photoluminescence properties of ZnO films [36][37][38]. Moreover, one can optimize the properties of ZnO and even obtain the electro-optic, magneto-optic, acousto-electronic and acousto-optic properties of ZnO via doping [39].…”

Excitation wavelength dependent photoluminescence intensity of six faceted prismatic ZnO microrods

“…On further addition of excess NaOH, zinc hydroxide precipitate re-dissolved to form a soluble zinc hydroxide complex [Zn(OH) 4 2− ].…”

“…Zinc oxide is a most promising material because of its wide direct band gap, large exciton binding energy (60 meV) as compared with other competitors such as GaN (25 meV) and ZnSe (22 meV), and low-threshold stimulated emissions at room temperature. These novel properties have made ZnO an intriguing candidate to be used in ultraviolet, violet, blue light emitting diodes (LEDs), lasing diodes, ultraviolet photodetector, transparent thin film transistors, field emission display, acoustic wave devices, chemical sensors, and solar cells [1][2][3][4][5][6][7][8][9][10]. Few reports were available on the growth of ZnO microrods grown at high * Tel.…”