The full text of this article


Active emitters based on nanostructured Si
by F. Gourbilleau, A. Belarouci, D. Breard, C. Dufour, R. Rizk
International Journal of Nanotechnology (IJNT), Vol. 5, No. 6/7/8, 2008


Abstract: The present paper deals with the use of Si nanoclusters as efficient sensitisers for Er and Nd rare earth ions or as active emitters in Si/SiO2 Fabry-Perot microcavities. The films have been fabricated using the reactive magnetron sputtering of a silica target. The energy transfer efficiency from Si-nc towards Er ions has been studied as a function of the fabrication parameters (hydrogen rate, annealing temperature) through time resolved PL intensity measurements on Er-doped silicon-rich silica layers. A multilayer approach has been developed to determine the critical parameters such as the optimum Si-nc size and the characteristic interaction distance Si-nc-Er ions which govern the transfer Si-nc-Er. Thus we have found an optimum size of 4 nm for the Si nanocluster and a maximum spacing of 0.4 nm between the Si-nc sensitisers and the Er3+ ions. First results on the efficient sensitising effect of Si nanocluster towards Nd3+ ions are also reported. Concerning the optical planar Si/SiO2 microcavities, spectral, spatial and temporal photoluminescence behaviour of the Si/SiO2 multilayers confined inside the resonator are studied. The comparison with a reference sample evidences the effect of the distributed Bragg reflectors structure on the intensity enhancement and the directional characteristic of the emission.

Online publication date: Sat, 14-Jun-2008


is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanotechnology (IJNT):
Login with your Inderscience username and password:


    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email