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  1. No Access

    Article

    Size control of Si nanocrystals by two-step rapid thermal annealing of sputtered Si-rich oxide/SiO2 superlattice

    Controllable size of silicon (Si) nanocrystals can be achieved by a two-step rapid thermal annealing technique consisting of rapid annealing at 1000°C in nitrogen ambient and rapid oxidation at 600–800°C of a ...

    Samson T. H. Silalahi, Q. V. Vu, H. Y. Yang, K. Pita, Yu Mingbin in Applied Physics A (2010)

  2. No Access

    Article

    Enhanced photosensitivity in sol–gel derived 20GeO2:80SiO2 thin films

    We investigate the photosensitivity of binary 20GeO2:80SiO2 (germanosilicate) inorganic films. The samples have been fabricated by the sol–gel spin-coating method and the densification has been performed by rapid...

    Rajni, K. Pita, S.C. T**, S.F. Yu, C.H. Kam in Applied Physics A (2006)

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    Article

    Conductivity drop and crystallites redistribution in gold film

    Electrical conductivity of Au film deposited on Si(100), Si(111) and BK7 glass substrates, ranging from 20 nm to 1000 nm, was measured. Conductivity drop and a decrease of averaged crystallite size are observe...

    G. Chen, P. Hui, K. Pita, P. Hing, L. Kong in Applied Physics A (2005)

  4. No Access

    Article

    Photoluminescence of sol–gel-derived Y2O3:Eu3+ thin-film phosphors with Mg2+ and Al3+ co-do**

    Red-light-emitting Y2O3:Eu3+ thin-film phosphors were synthesized using a sol–gel process. The effect of Mg2+ and Al3+ co-dopants on the Y2O3:Eu3+ thin-film phosphor photoluminescence (PL) property was investigat...

    M.K. Chong, K. Pita, C.H. Kam in Applied Physics A (2004)

  5. No Access

    Article

    Photoluminescence characteristics of neodymium oxide nanocrystal/titania/ormosil composite sol-gel thin films

    Neodymium (III) oxide nanocrystal/titania/organically-modified silane (ormosil) composite thin films have been prepared using a chemical approach consisting of a combination of inverse microemulsion and sol-ge...

    W.X. Que, Y. Zhou, Y.L. Lam, C.H. Kam, J. Zhou, K. Pita, Y.C. Chan… in Applied Physics A (2001)

  6. No Access

    Article

    Luminescence properties from erbium oxide nanocrystals dispersed in titania/organically modified silane composite sol–gel thin films

    Luminescence properties from erbium (III) oxide nanocrystals dispersed in titania/organically modified silane composite thin films were studied. Erbium oxide nanocrystals were prepared by an inverse microemuls...

    W. Que, Y. Zhou, Y.L. Lam, K. Pita, Y.C. Chan, C.H. Kam in Applied Physics A (2001)

  7. No Access

    Article

    Strip-Loaded High-Confinement Waveguides for Photonic Applications

    Sol-gel is a promising deposition technique for the fabrication of silica-on-silicon photonic components. Silica-titania compositions provide large index differences, and thus strong mode confinement, and are ...

    E.M. Yeatman, K. Pita, M.M. Ahmad, A. Vannucci… in Journal of Sol-Gel Science and Technology (1998)