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arXiv · 1103.1452

Atomistic study of electronic structure of PbSe nanowires

Abhijeet Paul·Gerhard Klimeck
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Abstract

Lead Selenide (PbSe) is an attractive `IV-VI' semiconductor material to design optical sensors, lasers and thermoelectric devices. Improved fabrication of PbSe nanowires (NWs) enables the utilization of low dimensional quantum effects. The effect of cross-section size (W) and channel orientation on the bandstructure of PbSe NWs is studied using an 18 band $sp^3d^5$ tight-binding theory. The bandgap increases almost with the inverse of the W for all the orientations indicating a weak symmetry dependence. [111] and [110] NWs show higher ballistic conductance for the conduction and valence band compared to [100] NWs due to the significant splitting of the projected L-valleys in [100] NWs.

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Abhijeet Paul, Gerhard Klimeck. 2011-03-08. Atomistic study of electronic structure of PbSe nanowires. https://doi.org/10.1063/1.3592577

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