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Title: Study of optical properties and effective three-photon absorption in Bi-doped ZnO nanoparticles
Authors: Karthikeyan, B.
Suchand Sandeep, C.S.
Philip, Reji
Baesso, M.L.
Issue Date: 1-Dec-2009
Publisher: American Institute of Physics
Citation: Journal of Applied Physics, 2009, Vol.106, p114304
Abstract: In this paper we report the linear and nonlinear optical properties of Bi-doped ZnO nanoparticles. Bi-doped ZnO nanoparticles were prepared through the wet chemical method at room temperature. Optical absorption measurements show that the exciton peaks are situated at 272 and 368 nm, which are attributed to the n=2 and n=1 exciton states, respectively. Transmission electron microscopy measurements reveal the size and shape of the particles and energy dispersive X-ray measurements confirm the doping of Bi in ZnO. Steady state photoluminescence measurements show that the emission is composed of five peaks. Open aperture z-scan measurements done at 532 nm using 5 ns, 300 μJ laser pulses reveal nonlinear absorption which arises from an effective three-photon absorption process.
Description: Open Access
ISSN: 1089-7550 (Online)
Alternative Location: 10.1063/1.3259404
Copyright: 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics
Appears in Collections:Research Papers (LAMP)

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