Probing the Wurtzite Conduction Band Structure Using State Filling in Highly Doped InP Nanowires.

Summary, in English

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).

• Author: Jesper Wallentin; Kilian Mergenthaler; Martin Ek; Reine Wallenberg; Lars Samuelson; Knut Deppert; Mats-Erik Pistol; Magnus Borgström
• Department/s: Solid State Physics; Centre for Analysis and Synthesis; NanoLund: Centre for Nanoscience
• Publishing year: 2011
• Language: English
• Pages: 2286-2290
• Publication/Series: Nano Letters
• Volume: 11
• Issue: Online May 23, 2011
• Links: http://dx.doi.org/10.1021/nl200492g
• Document type: Journal article
• Publisher: The American Chemical Society (ACS)
• Topic: Nano Technology; Condensed Matter Physics
• Status: Published
• Research group: Nanometer structure consortium (nmC)
• ISBN/ISSN/Other: ISSN: 1530-6992