Effect of Ag/Al co-doping method on optically p-type ZnO nanowires synthesized by hot-walled pulsed laser deposition

Abstract

Silver and aluminum-co-doped zinc oxide (SAZO) nanowires (NWs) of 1, 3, and 5 at.% were grown on sapphire substrates. Low-temperature photoluminescence (PL) was studied experimentally to investigate the p-type behavior observed by the exciton bound to a neutral acceptor (A0X). The A0X was not observed in the 1 at.% SAZO NWs by low-temperature PL because 1 at.% SAZO NWs do not have a Ag-O chemical bonding as confirmed by XPS measurement. The activation energies (Ea) of the A0X were calculated to be about 18.14 and 19.77 meV for 3 and 5 at.% SAZO NWs, respectively, which are lower than the activation energy of single Ag-doped NW which is about 25 meV. These results indicate that Ag/Al co-doping method is a good candidate to make optically p-type ZnO NWs.

Surface Modification of Bacterial Cellulose by Copper and Zinc Oxide Sputter Coating for UV-Resistance/Antistatic/Antibacterial Characteristics

“…Zinc oxide is a common element in many sunscreens, which converts ultraviolet radiation to infrared, yet infrared could be dangerous depending on the exposure [30].The application of a zinc oxide nanocomposite has been studied extensively in terms of optical, electrical, optoelectronic and photochemical characteristics. The high energy surface area of zinc oxide nanocomposites presents excellent characteristics in the applications of sensing devices, color creation and antimicrobial materials [31][32][33][34].The fabrication of metallic and metallic oxide nanoparticles on polymers and cellulosic materials has been reported with several methods and techniques, among which are hydrothermal, sol-gel, chemical deposition, photoreduction and laser deposition methods, according to applications [35][36][37][38][39]. Meanwhile, high temperatures, high pressures, costly machines, harmful elements and high process times are those factors which limit the material applications.…”

“…The fabrication of metallic and metallic oxide nanoparticles on polymers and cellulosic materials has been reported with several methods and techniques, among which are hydrothermal, sol-gel, chemical deposition, photoreduction and laser deposition methods, according to applications [35][36][37][38][39]. Meanwhile, high temperatures, high pressures, costly machines, harmful elements and high process times are those factors which limit the material applications.…”