The Journal of Physical Chemistry C · 2008 · 52 citations · 27 references
Natural SciencesMaterials EngineeringMaterials ScienceNanomaterialsNanotechnologyOptoelectronicsLuminescent MaterialsMetal Oxide NanomaterialsOptical Properties Of SemiconductorsOxide SemiconductorsSemiconductor NanomaterialsThermal Properties Of SemiconductorsFluorescence LifetimeLuminescence LifetimeLuminescent NanomaterialsNanorodsNanostructuresSemiconductor NanostructuresThermal QuenchingZinc Oxide Nanostructures
An experimental study of the luminescence intensity and time decay of the green band (GB) in ZnO nanorods as a function of temperature is reported. The GB intensity shows a negative thermal quenching behavior in the temperature range of 100−200 K. The increase of intensity is accompanied by a remarkable increase of lifetime with a maximum of ∼1.7 ms at 150 K, which is much longer than those documented values. We suggest that a multiple trapping−detrapping mechanism is responsible for the long lifetime. The results indicate that the surface state greatly influences the dynamics of the GB in ZnO nanostructures.
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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
Defect emissions in ZnO nanostructures
Aleksandra B. Djurišić, Y. H. Leung, K. H. Tam et al. · Nanotechnology · 2007 · 698 citations
Natural Sciences, Materials Engineering, Materials Science +17