Eur. Phys. J. Appl. Phys.
Volume 35, Number 1, July 2006
|Page(s)||29 - 36|
|Section||Nanomaterials and Nanotechnologies|
|Published online||06 July 2006|
Scanning probe microscopy, luminescence and third harmonic generation studies of elongated CdS:Mn nanostructures developed by energetic oxygen-ion-impact
Department of Physics, Tezpur University, PO Napaam, Assam – 784 028, India
2 Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi – 110 067, India
3 Laboratoire d'Optique Appliquée, ENSTA - École polytechnique, Centre de l'Yvette, 91128 Palaiseau Cedex, France
4 University “Politehnica” of Bucharest, 313 Splaiul Independentei str., sector 6, 060032 Bucharest, Romania
Corresponding author: email@example.com
Revised: 3 May 2006
Accepted: 4 May 2006
Published online: 6 July 2006
Manganese-doped cadmium sulfide nanoparticles are synthesized in a flexible polymer matrix (synthetic rubber) by a chemical route. They are bombarded with 80-MeV oxygen ions having electronic energy loss (Se) dominant over nuclear energy loss (Sn) and with fluence variation 1011–1013 ions/cm2. Piling up of nanoparticles along certain direction was observed in atomic force microscopy (AFM) images of irradiated samples. Such elongated nanostructures are as a result of nanoparticle growth during ion passage through the samples. Specifically, elongated structures in the form of nanoneedles, nanochannels and nanorods have been observed. The fluence dependent photoluminescence spectra (PL) show significant luminescent peaks at 445 nm and 706 nm, respectively which are tunable with ion fluence. Such a tunability could be promising as lasing materials in nano-luminescent devices and laser diodes. Further, detection of efficient third harmonic generation (THG) in these samples (by using irradiation of a Cr:fosterite laser) could be promising in nanoscopy and nonlinear optics.
PACS: 82.35.Np – Nanoparticles in polymers / 81.40.Wx – Radiation treatment (particle and electromagnetic) / 82.35.Ej – Nonlinear optics with polymers / 87.64.Tt – Confocal microscopy / 42.65.Ky – Frequency conversion; harmonic generation, including higher-order harmonic generation
© EDP Sciences, 2006
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