Photoluminescence and photoelectrochemical properties of the spray deposited copper doped zinc oxide thin films

Enhanced photoluminescence properties of Cu-doped ZnO thin films deposited by simultaneous RF and DC magnetron sputtering

“…In general, as the doping content increases, the film thickness increases and probably causes to decrease in the transmittance value. Tarwal et al [9] observed a similar decrease in optical transmittance in spray deposited Cu-doped ZnO films. The drop in optical transmittance may be associated with the incident photons gets scattered by the metallic Cu crystals incorporated at substitutional or interstitial positions of ZnO host lattice and it may also be due to the existence of lattice defects in ZnO host lattice.…”

“…Physical properties of pure ZnO films can be significantly enhanced by doping of some active transition metals. In the past, a wide variety of transition metals have been used as dopants in ZnO, such as Mo [5], Ni [6], Co [7], Ti [8], Cu [9] and V [10] using several deposition techniques at desired doping concentrations. Although various deposition methods were carried out to produce doped ZnO, the dopant concentration effect on ZnO host lattice is still not clear and challenging.…”

“…Additionally, Cu in its Cu 2 þ ionic state (0.072 nm) has similar ionic radius compared to Zn 2 þ (0.074 nm) and the similarities in their electronic shell structure allows Cu 2 þ ions substitution easily into the ZnO host lattice. So far, numerous attempts have been performed to fabricate the Cu-doped ZnO films for specific applications in the field of optoelectronics through various deposition techniques, such as spray pyrolysis [9,12], RF sputtering [13][14][15][16], DC sputtering [17], simultaneous RF and DC magnetron sputtering [18], low-temperature aqueous solution route [19], pulsed laser deposition [20] and co-reactive magnetron sputtering [21]. However, among these, we focused on simultaneous RF and DC magnetron sputtering technique which enables here for better adhesion, tunable dopant concentration and controllability of structural and optical properties by independently doping of dopant element into host lattice.…”

Preparation of Bismuth Oxide Thin Films by Spray Pyrolysis Method and Its Characterizations

“…Currently, researchers work to focus on various semiconducting materials such as Bi 2 O 3 , ZnO, Cu 2 O, TiO 2 , MgO 2 , etc . Among these materials Bi 2 O 3 is abundant, less toxic, and easily available.…”

An Application of Microemulsion Method for Synthesis of Copper-Zinc Materials

“…It has been predicted that Cu-ZnO is a ferromagnetic and shown signs of magnetic behavior. Because of that, various chemical and physical methods have been used for preparation of copper-zinc oxide systems and nowadays its examination enjoys huge interest [5].…”