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Updated: Jun 1, 2026

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
Probing the wurtzite conduction band structure using state filling in highly doped InP nanowires
Jesper Wallentin1, Kilian Mergenthaler, Martin Ek
1Solid State Physics, Lund University, Box 118, S-221 00, Lund, Sweden. alben@math.gatech.edu
Abstract:
We have grown InP nanowires doped with hydrogen sulfide, which exhibit sulfur concentrations of up to 1.4%. The highest doped nanowires show a pure wurtzite crystal structure, in contrast to bulk InP which has the zinc blende structure. The nanowires display photoluminescence which is strongly blue shifted compared with the band gap, well into the visible range. We find evidence of a second conduction band minimum at the gamma point about 0.23 eV above the band edge, in excellent agreement with recent theoretical predictions. Electrical measurements show high conductivity and breakdown currents of 10(7) A/cm(2).
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