Applied Physics Letters · 2006 · 36 citations · 13 references
Natural SciencesMaterials EngineeringMaterials ScienceNanomaterialsNanotechnologyOptical MaterialsInorganic NanoparticlesLuminescent MaterialsMetal Oxide NanomaterialsNanomaterial CharacterizationOxide SemiconductorsSemiconductor NanomaterialsExcitonsLuminescent NanomaterialsNanorodsOptical PropertiesPhotoluminescenceSurface Optical PropertiesSurface-to-volume Ratio EffectsZinc Oxide Nanostructures
In this contribution, we compare the photoluminescence properties of ZnO nanorods and epilayers with those of bulk ZnO. Owing to the high aspect ratio (length of 4–14μm, diameter of 80–500nm), the characterized ZnO nanorods show very good optical properties. Due to the high surface-to-volume ratio in ZnO nanorods, surface excitons dominate at low temperature. The optical properties of nanorod ensembles improve with increasing nanorod length. The photoluminescence emission from free A excitons was intense in the ZnO layer at 13K.
13
Bound exciton and donor–acceptor pair recombinations in ZnO
Bertrand Meyer, H. Alves, D.M. Hofmann et al. · physica status solidi (b) · 2004 · 1.6K citations