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PbSe unit cell with wire axis orientations (x) along (a) , (b) , and (c) . The W is of . Lead (Pb) and selenium (Se) atoms are shown.
Band structure of PbSe NWs for (a) , (b) , and (c)  channels. The CBM and VBM are normalized to zero for simplified band comparison. Only the first 5–10 sub-bands are shown.
(a) Band edges for square PbSe NWs with , , and  channel orientations. Band edge result using four band calculation for cylindrical PbSe NWs from Ref. 25. (b) Band gap variation for all the NWs. Dots are TB values and lines are analytical fits with W.
Ballistic conductance in PbSe NWs for (a) CB and (b) VB for three different wire orientations at . The temperature comes from the Fermi-Dirac distribution of the carriers.
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