|
|||||
|
|
Red luminescence in ZnO films prepared by a glycol-based Pechini method |
|
| Authors: | J.H. Cai G. Ni G. He Z.Y. Wu |
| Affiliation: | aDepartment of Physics, Shanghai Jiaotong University, Shanghai 200240, China bDepartment of Optics Science and Engineering, Fudan University, Shanghai 200433, China |
| Abstract: | ZnO thin films on fused quartz substrates were prepared by a glycol-based Pechini method. The structural and optical properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), optical transmittance spectrum, and photoluminescence (PL) spectrum. A red emission around 700 nm was found in PL spectrum, and its peak intensity gained a strong enhancement (140%) while annealing temperature increased from 700 °C to 800 °C. The red emission was ascribed to the possible high defect density in boundary layers of nanocrystalline grains. |
| Keywords: | Luminescence Optical materials and properties Thin films Defects Sol-gel preparation |
| 本文献已被 ScienceDirect 等数据库收录！ | |