Injection of carriers from a ZnO nanostructured shell to a ZnS based microsphere core

Sung Il Ahn; Seong Eui Lee; Yong-Hoon Cho; Gi Ryoung Kim; Song-Mei Li; Kyung Cheol Choi; Won Hee Lee
July 2009
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p022108
Academic Journal
ZnO nanostructures were synthesized on a microsphere ZnS:Cu,Cl (ZC) with various optical emission bands. Using an electroluminescence (EL) device with a semiliquid type of active layer, the carrier injection phenomenon through the nanostructure was observed. The EL from ZnO nanorods on the cubic ZC and the ZnO plate on the hexagonal ZC showed a nonlinear voltage-color characteristic and deep blue color, respectively, as explained by the carrier injection through the ZnO nanostructures. Both carrier injection cases appear to have been caused by the lowered band-gap energy at the boundary and by the structural factors that focused the applied electric field.


Related Articles

  • Electric field induced reversible control of visible photoluminescence from ZnO nanoparticles. Ghosh, Manoranjan; Raychaudhuri, A. K. // Applied Physics Letters;4/11/2011, Vol. 98 Issue 15, p153109 

    Reversible control of the photoluminescence of ZnO occurring in the visible range, has been achieved by application of a few volts (<5 V) to a device consisting of nanostructured ZnO film sandwiched between indium tin oxide electrode and polyethylene oxide-lithium perchlorate, a solid polymer...

  • Decoupling single nanowire mobilities limited by surface scattering and bulk impurity scattering. Khanal, D. R.; Levander, A. X.; Yu, K. M.; Liliental-Weber, Z.; Walukiewicz, W.; Grandal, J.; Sánchez-García, M. A.; Calleja, E.; Wu, J. // Journal of Applied Physics;Aug2011, Vol. 110 Issue 3, p033705 

    We demonstrate the isolation of two free carrier scattering mechanisms as a function of radial band bending in InN nanowires via universal mobility analysis, where effective carrier mobility is measured as a function of effective electric field in a nanowire field-effect transistor. Our results...

  • Nitrogen doped-ZnO/n-GaN heterojunctions. Chen, Xin Yi; Fang, Fang; Ng, Alan M. C.; Djurisˇicˇ, Aleksandra B.; Cheah, Kok Wai; Ling, Chi Chung; Chan, Wai Kin; Fong, Patrick W. K.; Lui, Hsian Fei; Surya, Charles // Journal of Applied Physics;Apr2011, Vol. 109 Issue 8, p084330 

    Nitrogen-doped ZnO nanorods were prepared by electrodeposition using two different Zn precursors (zinc nitrate and zinc acetate), while all other growth conditions (dopant precursor, concentration, growth temperature, and bias) were identical. We have shown that the precursor used affects the...

  • Combined experimental and theoretical DFT study of molecular nanowires negative differential resistance and interaction with gold clusters. Záliš, S.; Kratochvilova, I.; Zambova, A.; Mbindyo, J.; Mallouk, T. E.; Mayer, T. S. // European Physical Journal E -- Soft Matter;Oct2005, Vol. 18 Issue 2, p201 

    Electric-field-assisted assembly has been used to place rod-shaped metal nanowires containing 4-[[2-nitro-4-(phenylethynyl) phenyl] ethynyl] benzenthiol molecules onto lithographically defined metal pads. These junctions exhibited negative differential resistance. The quantum chemical approach...

  • Study of Zig-Zag Carbon Nanotubes Under an External Electric Field. Farahani, S. Vasheghani; Senejani, A. Sajjadi; Mosa, M. R. Soltani Erde; Salehkoutahi, M. // European Journal of Scientific Research;Oct2007, Vol. 18 Issue 3, p427 

    In this Paper We investigate the electronic structure change of semi conducting carbon Nanotubes under an external electric field with the density functional theory (DFT). Here We study the band structure and density of state (DOS) of carbon Nanotubes for this purpose and compare them before and...

  • Routes to self-assembly of nanorods. Ramasamy, Karthik; Gupta, Arunava // Journal of Materials Research;Jul2013, Vol. 28 Issue 13, p1761 

    Self-assembled nanostructures often exhibit unique properties that are distinct from those of bulk materials. During the past decade, significant progress has been made in the assembly of nanorods and understanding some of the self-directing assembly mechanisms, particularly related to gold...

  • In situ growth of nanowire on the tip of a carbon nanotube under strong electric field. Wang, Y. G.; Li, Q. H.; Wang, T. H.; Lin, X. W.; Dravid, V. P.; Zhou, S. X. // Applied Physics Letters;3/28/2005, Vol. 86 Issue 13, p133103 

    We present experimental evidence of in situ growth of carbon nanowires on the tip of a carbon nanotube under an applied voltage of 150 V. The grown nanowires with the well-defined geometry and diameter less than ten nanometers are structurally amorphous in nature and result in the solid carbon...

  • Hole-mediated electric field tunable high Curie temperature in Mn-doped wurtzite ZnO nanowires. Zhang, Xiu-Wen; Fan, Wei-Jun; Li, Shu-Shen; Xia, Jian-Bai // Applied Physics Letters;11/26/2007, Vol. 91 Issue 22, p223103 

    The hole-mediated Curie temperature in Mn-doped wurtzite ZnO nanowires is investigated using the k·p method and mean field model. The Curie temperature TC as a function of the hole density has many peaks for small Mn concentration (xeff) due to the density of states of one-dimensional quantum...

  • Schottky barriers on silicon nanowires influenced by charge configuration. Piscator, J.; Engström, O. // Journal of Applied Physics;Sep2008, Vol. 104 Issue 5, p054515 

    Due to the geometry offered by nanowires, it is possible to introduce electric fields directed from the wire wall toward a Schottky contact positioned on the end surface of a wire. In the present work a simple model demonstrating the effect of charge on the wire walls close to the metal...


Read the Article


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

Try another library?
Sign out of this library

Other Topics