Liang W.,Xi'an Jiaotong University |
Liang W.,Key Laboratory of Photonics Technology for Information |
Chen F.,Xi'an Jiaotong University |
Chen F.,Key Laboratory of Photonics Technology for Information |
And 11 more authors.
Optics Communications | Year: 2010
Periodic surface nanostructures induced by femtosecond laser pulses on polycrystalline ZnO are presented. By translating the sample line-by-line under appropriate irradiation conditions, grating-like nanostructures with an average period of 160 nm are fabricated. The dependence of surface morphologies on the processing parameters, such as laser fluence, pulse number and laser polarization, are studied by scanning electronic microscope (SEM). In addition, photoluminescence (PL) analysis at room-temperature indicates that the PL intensity of the irradiated area increases significantly compared with the un-irradiated area. Using femtosecond laser pulses irradiation to fabricate periodic surface nanostructures on polycrystalline ZnO is efficient, simple and low cost, which shows great potential applications in ZnO-based optoelectronic devices. © 2010 Elsevier B.V. All rights reserved.