一种P掺杂ZnO纳米梳的制备及其光致发光性能研究

Fabrication and photoluminescence of P-doped ZnO nanocombs

采用化学气相沉积(CVD)方法制备了P掺杂ZnO纳米梳,扫描电子显微镜(SEM)结果显示,纳米梳状产物均匀分布在Si衬底上。P掺杂ZnO纳米梳为高度结晶的六方纤锌矿结构,ZnO中P的掺杂含量约为2%(原子分数)。室温光致发光(PL)光谱表明,P掺杂ZnO纳米梳在样品不同区域的发光性能略有不同,但是均出现3个发光峰:紫外、绿光和近红外发光峰。同时PL结果也表明样品的整体结晶质量比较好。

P-doped ZnO nanocombs were successfully synthesized via a simple chemical vapor deposition (CVD) method.SEM results indicate that the production composes of nanocombs.P doping concentration was about 2 at%.X-ray diffraction (XRD)spectrum of the P-doped ZnO nanocombs reflects the wurtzite structure,and no any impurity phase was detected.In addition,the photoluminescence spectra of the P-doped ZnO nanocomb were also investigated.There were three emission peaks,ultraviolet emission,green emission and near-infrared emission.The high intensity of ultraviolet and near-infrared emission peaks reveals that the crystal quality of the nanocombs was high.