CAJ | 학술논문

为了研究能隙修改和发光强度之间的关系，通过化学共沉淀法制备钇、镉共掺杂的氧化锌纳米粉体。采用XRD、XPS及PL对样品的晶体结构和光学性能进行研究。通过对钇、镉离子对氧化锌光学性能影响的研究发现，钇的掺入能够有效地增强氧化锌的紫外发光，钇、镉共掺杂在增强发光的同时，还使得氧化锌的带隙窄化，使得紫外发光红移，从而使得样品的室温光致发光图谱呈现出增强的紫光发射。该材料有望应用在制备光电器件方面。
위료연구능극수개화발광강도지간적관계，통과화학공침정법제비을、력공참잡적양화자납미분체。채용XRD、XPS급PL대양품적정체결구화광학성능진행연구。통과대을、력리자대양화자광학성능영향적연구발현，을적참입능구유효지증강양화자적자외발광，을、력공참잡재증강발광적동시，환사득양화자적대극착화，사득자외발광홍이，종이사득양품적실온광치발광도보정현출증강적자광발사。해재료유망응용재제비광전기건방면。
Y and Cd co-doped ZnO nanopowders were prepared via chemical precipitation method in order to modify the band gap and increase the luminescent intensity. The structures and optical properties of the as-synthesized samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL). The effects of Y and Cd ions on the optical properties of the samples were studied. Doping of Y into ZnO evidently increases the intensity of UV emission, or co-doping of Y and Cd enhances the UV emission, narrows the band gap of ZnO and hence red shifts the UV emission at the same time. Therefore, Y and Cd co-doped ZnO nanopowders exhibit an intense violet emission in the room temperature PL spectrum, which could be a potential candidate material for optoelectronic applications.