Electroluminescent and Photoluminescent Properties of Semiconductor-Based Materials with Different Structures

摘要

Researches oa the fabrication of semiconductor-based luminescent materials with different structures have been extensively carried out to enhance the emission intensity in the past decades. In this review, we introduce a series of research on the luminescent properties of materials with different structures, including electroluminescence (EL) and photo luminescence (PL). For example, giant enhanced EL of mesoporous ZnO and ZnS have been prepared through a sol-gel method. Photoluminescent colloidal CdS nanocrystals were synthesized via a non-injection method. Monodisperse spherical and mesoporous Eu-doped TiO2 particles and TiO2 nanowires have been fabricated by soft-chemical processing and their luminescence properties were reported. Hollow TiO2:Sm~(3+) spheres with enhanced PL have been synthesized using polystyrene as template. Plasmon-enhanced PL of Au-doped TiO2 and ZnS were systematic studied. In addition, the excellent photocatalytic activity of the urchin-like hierarchical TiO2 was studied and confirmed in our reported work. Au or Ag nanoparticle-decorated 3D urchin-like TiO2 nanostructures with enhanced photocatalytic activity were further proposed. The above research results cost a great effort of our group and may promote the development of nanolaser and other nanophotonic devices.