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|Title:||Post growing annealing effect on the optical, electrical and structural properties of CdSe nanocrystals embedded in silica thin films|
Rolo, Anabela G.
Gomes, M. J. M.
Nanocrystalline thin films
|Journal:||Thin solid films|
|Abstract(s):||In this work post-growth annealing effect on CdSe/SiO2 thin films grown by rf-magnetron co-sputtering technique was investigated. Annealed samples were characterised by Raman scattering, grazing incidence X-ray diffraction and room temperature photoluminescence. The nanocrystals (NCs) size changed from 15 to 5 nm by varying the annealing temperature from 550 to 400 degrees C Evaporation of Se at high temperatures was invoked to explain this phenomenon. Fowler-Nordheim tunnelling mechanism was found to be responsible for carrier transport for samples with bigger CdSe NCs sizes, and which showed better photovoltaic properties.|
|Access:||Restricted access (UMinho)|
|Appears in Collections:||CDF - FMNC - Artigos/Papers (with refereeing)|
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