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Visible light emission from self-catalyzed GaInP/GaP core-shell double heterostructure nanowires on silicon
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10.1063/1.3457355
/content/aip/journal/jap/108/3/10.1063/1.3457355
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/3/10.1063/1.3457355

Figures

Image of FIG. 1.
FIG. 1.

Schematic illustrations and typical SEM images of the formation of (a) Ga droplets and (b) GaP core NWs.

Image of FIG. 2.
FIG. 2.

(a) Schematic illustrations of GaInP/GaInP/GaP core-shell double heterostructure NW [sample (A)], GaInP/GaP core-shell NW [sample (B)], and GaP core NW [sample (C)]. (b) SEM and (c) side-view XTEM images of the sample (A). An inset of (b) is the top-view SEM of the sample (A). (d) side-view HR-XTEM image of GaInP double heterostructures in (c). (e) top-view HR-XTEM image of the sample (A). (f) XEDS line scan of the sample (A) along a horizontal axis with a side-view HR-XTEM image.

Image of FIG. 3.
FIG. 3.

(a) Digital camera images of the sample (A) measured at 77 K with an excitation by a 6 mW blue 403 nm semiconductor lasers through a high-pass filter which cuts the signal below 420 nm. An inset is the image without the high-pass filter. (b) PL spectra at 77 K of three samples [samples (A)–(C)] before the passivation process.

Image of FIG. 4.
FIG. 4.

(a) PL spectra at 77 K of the sample (A) before the passivation process at different pump power densities ranging from to 6 mW. (b) Peak intensities of the PL peak at 640 nm and 805 nm vs incident pump powers.

Image of FIG. 5.
FIG. 5.

PL spectra at 77 K of the sample (A) before and after the passivation process.

Tables

Generic image for table
Table I.

Growth conditions (mole flow of TMG, TMI, or TBP, and V/III ratio) of each layer (Ga droplets, GaP core, and GaInP heterostructures).

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/content/aip/journal/jap/108/3/10.1063/1.3457355
2010-08-09
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Visible light emission from self-catalyzed GaInP/GaP core-shell double heterostructure nanowires on silicon
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/3/10.1063/1.3457355
10.1063/1.3457355
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