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Optoelectronic response calculations in the framework of kp coupled to non-equilibrium Green's functions for one-dimensional systems in the ballistic limit
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10.1063/1.4815949
/content/aip/journal/jap/114/3/10.1063/1.4815949
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/3/10.1063/1.4815949
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Nanosized p-i-n diode.

Image of FIG. 2.
FIG. 2.

Band profile for the conduction and valence bands. Brown line indicates Fermi level.

Image of FIG. 3.
FIG. 3.

Spatial distribution of hole and electron current at at zero bias for p-i-n structure. One can see that total current is conserved.

Image of FIG. 4.
FIG. 4.

Energetic current distribution over valence and conduction bands at at zero bias for p-i-n structure.

Image of FIG. 5.
FIG. 5.

Photoresponse at zero bias for p-i-n structure with and without photon-assisted (Franz-Keldysh effect) tunneling.

Image of FIG. 6.
FIG. 6.

Local density of states. (a) LDOS plot (x-axis is position in nm, y-axis is energy in eV) and (b) cross sections of the LDOS. Main graph is the spatial LDOS near the top of the valence band. Inset is the cross section over energy coordinate near the middle of the device.

Image of FIG. 7.
FIG. 7.

IV characteristics at . Please note that the current sign is taken opposite of the original one (originally current flow taken positive from lead to lead).

Image of FIG. 8.
FIG. 8.

2D distribution spectral current for six different photon energies. x-axis units are nm, y-units are eV. Colormap units correspond to nA/eV.

Image of FIG. 9.
FIG. 9.

Spatial distribution of hole and electron currents at eV, eV, and eV.

Image of FIG. 10.
FIG. 10.

Current vs. number of off-diagonals at at zero bias for p-i-n structure at  = 130  . Blue line corresponds to full matrix  = 139.

Image of FIG. 11.
FIG. 11.

Effect of number of off-diagonals on the 2D current. (a) and (b) , which is approaching full matrix rank.

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/content/aip/journal/jap/114/3/10.1063/1.4815949
2013-07-19
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optoelectronic response calculations in the framework of k·p coupled to non-equilibrium Green's functions for one-dimensional systems in the ballistic limit
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/3/10.1063/1.4815949
10.1063/1.4815949
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