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Electrically pumped near-ultraviolet lasing from ZnO/MgO core/shell nanowires
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10.1063/1.3625925
/content/aip/journal/apl/99/6/10.1063/1.3625925
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/6/10.1063/1.3625925
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) and (c) Tilted-view SEM images of as-grown ZnO NWs and NWs covered by MgO. The inset in (a) clearly shows the hexagonal cross-section of ZnO NW. (b) HRTEM image and SAED pattern of an individual NW. (d) and (e) TEM images of ZnO/MgO CS-NWs and two EDX spectra obtained from upper and lower regions of a single NW.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Room-temperature PL spectra of ZnO NWs with and without MgO coating layer. (b) I-V characteristic of the CS-NW LD, its inset is a log-log plot of the I-V curve under low forward bias.

Image of FIG. 3.
FIG. 3.

(Color online) EL spectra of the CS-NW LD under different injection currents. The left and right insets exhibit an energy-band alignment under forward bias and the superlinear dependence of integrated emission intensity on injection current.

Image of FIG. 4.
FIG. 4.

(a) Two lasing spectra from our NW (right) and film (left) LDs, which were measured in the same experimental conditions. (b) The lasing spectra of the CS-NW LD obtained in two successive measurements. (c) A representative lasing spectrum showing that the emission wavelength is separated into two different regions.

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/content/aip/journal/apl/99/6/10.1063/1.3625925
2011-08-12
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrically pumped near-ultraviolet lasing from ZnO/MgO core/shell nanowires
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/6/10.1063/1.3625925
10.1063/1.3625925
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