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Your search keyword '"Ng, A.M.C."' showing total 32 results
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32 results on '"Ng, A.M.C."'

19. Au/n-ZnO rectifying contact fabricated with hydrogen peroxide pretreatment

Author

Gu, Q.L., Ng, A.M.C., Cheung, C.K., Ling, C.C., Djurisic, A.B., Lu, L.W., Chen, X.D., Fung, S., Beling, C.D., and Ong, H.C.

Subjects
Gold compounds -- Properties, Zinc oxide -- Properties, Hydrogen peroxide -- Properties, Physics
Abstract

Several studies are contact to explain the properties and Schottky contact of the Au/n-ZnO rectifying contact, which is fabricated by employing the hydrogen peroxide pretreatment method. The treatment is shown to be extremely advantageous, as it helps in removing the OH impurity from the system.

Published
2008

20. Tuning lithium ion battery performance: Effect of structure and microstructure on the capacity of the CoMn2O4 materials

Author

Brkić, S., Popović, Jasminka, Djurišić, A.B., Ng, A.M.C., Liu, X., Sun, Q., Xie, M. H., and Suchomski, C.

Subjects
lithium ion batteries, microstructure, CoMn2O4
Abstract

CoMn2O4 nanomaterials are prepared by a low temperature precipitation route employing metal acetates and NaOH. Structural changes, induced by different annealing temperatures, are comprehensively analyzed by X-ray powder diffraction and Raman spectroscopy.

Published
2015

21. Correlation of quantum efficiency and photoluminescence lifetime of ZnO tetrapods grown at different temperatures

Author

Tam, M.C., Ng, A.M.C., Djurisic, A.B., Wong, K.S., Tam, M.C., Ng, A.M.C., Djurisic, A.B., and Wong, K.S.

Abstract

Absolute external quantum efficiencies (eta s) and photoluminescence (PL) decay lifetimes of ZnO tetrapods grown at different temperatures were measured. All the tetrapods had an UV peak at about 390nm and a very weak defect emission. Measurements showed that the tetrapods have eta s of 2%-4% at room temperature. The sample, grown at optimal temperature, exhibited the largest absolute eta of 4.3% and longest PL decay lifetimes among all the samples. These results showed that precise control of growth temperature plays an important role in making high quality ZnO tetrapods. In time-resolved measurement, the PL decay time constant (tau) versus temperature is well fitted by the theoretical prediction tau = aT(3/2). This increase in PL lifetime with increasing temperature shows that the excited state relaxation is dominated by radiative recombination. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4737785]

Published
2012

25. Study of Laser-Debonded GaN LEDs

Author

Chan, C.P., primary, Gao, J., additional, Yue, T.M., additional, Surya, C., additional, Ng, A.M.C., additional, Djuric, A.B., additional, Liu, P.C.-K., additional, and Li, M., additional

Published
2006
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