Nanograins of Zinc oxide doped with silver and co-doped with rare earth elements were synthesized by sol-gel auto combustion method and annealed at1100 °C for 5 h. The average particle size and hexagonal wurtzite crystalline phases of the prepared samples were determined by X-ray diffraction analysis. The incorporation of silver ions and lanthanum ions into zinc lattice provoked the increase in size of the nano grains as compared to yttrium doped ZnAgO. The SEM micrographs analysis reveals the morphological changes in the doped and undoped ZnO. The pure ZnO morphology show prominent hexagonal structure whereas Ag doped and La/Y co doped ZnO envisioned the hexagonal nanoparticles bestowed as nanobricks in the ZnO lattice. The EDS spectra confirmed the presence of respective dopants in the ZnO host lattice. The optical studies have been characterized using Raman spectroscopy, Ultraviolet-diffuse reflectance spectroscopy studies and photoluminescence spectroscopy. The optical absorption show the decrease in energy bandgap for the rare earth doped ZnAgO. Raman scattering provide the various vibrational modes and indicate the presence of oxygen vacancy and the compressive strain in the prepared samples. Doping suppresses the UV emission and displays uniform intensity for a wide range of visible spectrum in the photoluminescence spectra. Besides the usual bactericidal and photo catalytic activity of silver doped Zinc oxide, this work signifies the optical PL quenching properties of rare earth doped ZnAgO.

通过溶胶-凝胶自动燃烧法合成了掺银和掺稀土元素的氧化锌纳米粒子，并在1100℃下退火5h。通过X射线衍射分析确定所制备样品的平均粒径和六方纤锌矿晶体相。与钇掺杂的ZnAgO相比，将银离子和镧离子掺入锌晶格中引起了纳米晶粒尺寸的增加。SEM显微照片分析揭示了掺杂和未掺杂的ZnO的形态变化。纯的ZnO形态显示出突出的六边形结构，而Ag掺杂和La / Y共掺杂的ZnO则预想了在ZnO晶格中被赋予纳米砖的六边形纳米颗粒。EDS光谱证实了ZnO主晶格中存在相应的掺杂剂。光学研究已使用拉曼光谱，紫外-漫反射光谱研究和光致发光光谱进行了表征。光吸收表明稀土掺杂ZnAgO的能带隙减小。拉曼散射提供了各种振动模式，并指示了所制备样品中氧空位的存在和压缩应变。掺杂可抑制紫外线发射，并在光致发光光谱中的宽范围可见光谱中显示均匀的强度。除了银掺杂的氧化锌通常具有的杀菌和光催化活性外，这项工作还表明稀土掺杂的ZnAgO的光学PL猝灭特性。光吸收表明稀土掺杂ZnAgO的能带隙减小。拉曼散射提供了各种振动模式，并表明了制备样品中氧空位和压缩应变的存在。掺杂可抑制紫外线发射，并在光致发光光谱中的宽范围可见光谱中显示均匀的强度。除了银掺杂的氧化锌通常具有的杀菌和光催化活性外，这项工作还表明稀土掺杂的ZnAgO的光学PL猝灭特性。光吸收表明掺稀土的ZnAgO的能带隙减小。拉曼散射提供了各种振动模式，并表明了制备样品中氧空位和压缩应变的存在。掺杂可抑制紫外线发射，并在光致发光光谱中的宽范围可见光谱中显示均匀的强度。除了银掺杂的氧化锌通常具有的杀菌和光催化活性外，这项工作还表明稀土掺杂的ZnAgO的光学PL猝灭特性。掺杂可抑制紫外线发射，并在光致发光光谱中的宽范围可见光谱中显示均匀的强度。除了银掺杂的氧化锌通常具有的杀菌和光催化活性外，这项工作还表明稀土掺杂的ZnAgO的光学PL猝灭特性。掺杂可抑制紫外线发射，并在光致发光光谱中的宽范围可见光谱中显示均匀的强度。除了银掺杂的氧化锌通常具有的杀菌和光催化活性外，这项工作还表明稀土掺杂的ZnAgO的光学PL猝灭特性。