Influence of the matrix properties on the performances of Er-doped Si nanoclusters light emitting devices
Journal Article
·
· Journal of Applied Physics
- CNR-IMM MATIS, Via Santa Sofia 64, 95123 Catania (Italy)
- STMicroelectronics, Stradale Primosole 50, 95121 Catania (Italy)
We investigated the properties of light emitting devices whose active layer consists of Er-doped Si nanoclusters (nc) generated by thermal annealing of Er-doped SiO{sub x} layers prepared by magnetron cosputtering. Differently from a widely used technique such as plasma enhanced chemical vapor deposition, sputtering allows to synthesize Er-doped Si nc embedded in an almost stoichiometric oxide matrix, so as to deeply influence the electroluminescence properties of the devices. Relevant results include the need for an unexpected low Si excess for optimizing the device efficiency and, above all, the strong reduction of the influence of Auger de-excitation, which represents the main nonradiative path which limits the performances of such devices and their application in silicon nanophotonics.
- OSTI ID:
- 21476389
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 107; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ANNEALING
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
DE-EXCITATION
DEPOSITION
DOPED MATERIALS
ELECTROLUMINESCENCE
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
ERBIUM
HEAT TREATMENTS
LAYERS
LUMINESCENCE
MATERIALS
MATRIX MATERIALS
METALS
NANOSTRUCTURES
OXIDES
OXYGEN COMPOUNDS
PHOTON EMISSION
PLASMA
RADIATIONS
RARE EARTHS
SEMICONDUCTOR MATERIALS
SEMIMETALS
SILICON
SILICON COMPOUNDS
SILICON OXIDES
SPUTTERING
STOICHIOMETRY
SURFACE COATING
VISIBLE RADIATION
77 NANOSCIENCE AND NANOTECHNOLOGY
ANNEALING
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
DE-EXCITATION
DEPOSITION
DOPED MATERIALS
ELECTROLUMINESCENCE
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
ERBIUM
HEAT TREATMENTS
LAYERS
LUMINESCENCE
MATERIALS
MATRIX MATERIALS
METALS
NANOSTRUCTURES
OXIDES
OXYGEN COMPOUNDS
PHOTON EMISSION
PLASMA
RADIATIONS
RARE EARTHS
SEMICONDUCTOR MATERIALS
SEMIMETALS
SILICON
SILICON COMPOUNDS
SILICON OXIDES
SPUTTERING
STOICHIOMETRY
SURFACE COATING
VISIBLE RADIATION