6533b854fe1ef96bd12aeb2a
RESEARCH PRODUCT
Optical properties and microstructure of 2.02-3.30 eV ZnCdO nanowires: effect of thermal annealing
Jm José Maria UlloaSaid AgouramAdrian HierroPierre LefebvreJiro TemmyoE. MuñozKenji YamamotoVicente Muñoz-sanjoséAtsushi NakamuraManuel Lopez-poncesubject
010302 applied physicsTelecomunicacionesPhotoluminescenceMaterials sciencePhysics and Astronomy (miscellaneous)Annealing (metallurgy)business.industryWide-bandgap semiconductorNanowire02 engineering and technology021001 nanoscience & nanotechnologyMicrostructure01 natural sciencesHomogeneous distributionRadiative efficiency0103 physical sciences[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Optoelectronics0210 nano-technologybusinessWurtzite crystal structuredescription
International audience; ZnCdO nanowires with up to 45% Cd are demonstrated showing room temperature photoluminescence (PL) down to 2.02 eV and a radiative efficiency similar to that of ZnO nanowires. Analysis of the microstructure in individual nanowires confirms the presence of a single wurtzite phase even at the highest Cd contents, with a homogeneous distribution of Cd both in the longitudinal and transverse directions. Thermal annealing at 550 C yields an overall improvement of the PL, which is blue-shifted as a result of the homogeneous decrease of Cd throughout the nanowire, but the single wurtzite structure is fully maintained.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-04-08 |