Optical and nonlinear absorption properties of Na doped ZnO nanoparticle dispersions

Karthikeyan, B.; Sandeep, C. S. Suchand; Pandiyarajan, T.; Venkatesan, P.; Philip, Reji
July 2009
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p023118
Academic Journal
We report linear and nonlinear optical properties of the biologically important Na doped ZnO nanoparticle dispersions. Interesting morphological changes involving a spherical to flowerlike transition have been observed with Na doping. Optical absorption measurements show an exciton absorption around 368 nm. Photoluminescence measurements reveal exciton recombination emission, along with shallow and deep trap emissions. The increased intensity of shallow trap emission with Na doping is attributed to oxygen deficiency and shape changes associated with doping. Nonlinear optical measurements show a predominantly two-photon induced, excited state absorption, when excited with 532 nm, 5 ns laser pulses, indicating potential optical limiting applications.


Related Articles

  • Characterization of physicochemical properties of ivy nanoparticles for cosmetic application. Yujian Huang; Lenaghan, Scott C.; Lijin Xia; Burris, Jason N.; Stewart Jr., C. Neal; Mingjun Zhang // Journal of Nanobiotechnology;2013, Vol. 11 Issue 1, p1 

    Background: Naturally occurring nanoparticles isolated from English ivy (Hedera helix) have previously been proposed as an alternative to metallic nanoparticles as sunscreen fillers due to their effective UV extinction property, low toxicity and potential biodegradability. Methods: This study...

  • The Nanosphere Driven Optical and Dielectric Changes in Ferroelectric Liquid Crystal. Singh, Dharmendra Pratap; Gupta, S. K.; Pandey, Shivani; Vimal, Tripti; Pandey, A. C.; Manohar, Rajiv // AIP Conference Proceedings;2014, Vol. 1591, p1674 

    ZnO1-XSX nanospheres (NS) were dispersed in FLC 16/100. The dispersion of NS in FLC causes enhanced relative permittivity and photoluminescence. The localized surface Plasmon resonance is responsible for enhanced PL behavior whereas the defect related secondary emissions are also observed in the...

  • Effects of Mg doping on the structural and optical properties of ZnO nanoparticles. Srinet, Gunjan; Kumar, Ravindra; Sajal, Vivek // AIP Conference Proceedings;Jun2013, Vol. 1536 Issue 1, p247 

    Mg doped ZnO (ZnxMg1-xO, x=0.02, 0.06 and 0.1) nanoparticles were successfully prepared by thermal decomposition method. Reitveld analysis of the XRD data confirmed the wurtzite structure and the continuous change in lattice parameters. Absorption spectra revealed a blue shift in the energy band...

  • Optical Properties of MEH-PPV Thin Films Containing ZnO Nanoparticles. Zayana, N. Y.; Shariffudin, S. S.; Jumali, N. S.; Shaameri, Z.; Hamzah, A. S.; Rusop, M. // AIP Conference Proceedings;5/25/2011, Vol. 1341 Issue 1, p72 

    Thin films of poly [2-methoxy-5(2'-ethyl hexyloxy)-phenylene vinylene] (MEH-PPV) containing different weight percent of ZnO nanoparticles were deposited by spin coating from THF solutions and their optical properties were investigated. Optical characterization of the nanocomposite thin films...

  • The effect of surface modification on the electronic properties of ZnO nanoparticles by Tb. Sharma, A.; Dhar, S.; Singh, B. P.; Kundu, T. // AIP Conference Proceedings;6/5/2012, Vol. 1447 Issue 1, p657 

    Structural and optical properties of the Tb doped ZnO nanoparticles are systematically studied as a function of the Tb mole-fraction. Our study suggests that the Tb incorporates mostly on the surface and affects the optical properties of the ZnO nanoparticles by influencing the attachment of...

  • COMPOSITION AND OPTICAL CHARACTERIZATION OF ZnO/NiO MULTILAYER THIN FILM: EFFECT OF ANNEALING TEMPERATURE. Ajuba, A. E.; Ezugwu, S. C.; Asogwa, P. U.; Ezema, F. I. // Chalcogenide Letters;Oct2010, Vol. 7 Issue 10, p573 

    ZnO/NiO multilayer thin films were obtained using chemical bath deposition method. The precursor solution used were nickel sulphate and zinc nitrate. The effect of annealing temperature on the optical properties and band-gap energy were studied by annealing the deposited films at different...

  • Synthesis and characterization of ZnO:Co2+ nanoparticles. Volbers, N.; Zhou, H.; Knies, C.; Pfisterer, D.; Sann, J.; Hofmann, D.M.; Meyer, B.K. // Applied Physics A: Materials Science & Processing;Jul2007, Vol. 88 Issue 1, p153 

    This work investigates cobalt doped ZnO nanoparticles prepared by using wet chemical methods. The nanoparticles have a typical size of 3–8 nm. The electronic structure as well as the optical and magnetic properties of Co2+ have been characterized. X-ray diffraction spectra of the powder...

  • Optical absorption edge of ZnO thin films: The effect of substrate. Srikant, V.; Clarke, D. R. // Journal of Applied Physics;5/1/1997, Vol. 81 Issue 9, p6357 

    The optical absorption edge and the near-absorption edge characteristics of undoped ZnO films grown by laser ablation on various substrates have been investigated. The band edge of films on C [(0001)] and R-plane [(1102)] sapphire, 3.29 and 3.32 eV, respectively, are found to be very close to...

  • Optical and electrical properties of aluminum-doped zinc oxide nanoparticles. Yulong Zhang; Ye Yang; Junhua Zhao; Ruiqin Tan; Weiyan Wang; Ping Cui; Weijie Song // Journal of Materials Science;Feb2011, Vol. 46 Issue 3, p774 

    luminum-doped zinc oxide nanopowders were prepared using a surfactant assisted complex sol-gel method, and were characterized using inductively coupled plasma, X-ray diffraction, scanning electron microscopy/energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and UV-Vis...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics