Valence band splitting in wurtzite InP nanowires observed by photoluminescence and photoluminescence excitation spectroscopy |
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| Authors: | Gerben L. Tuin Magnus T. Borgström Johanna Trägårdh Martin Ek L. Reine Wallenberg Lars Samuelson Mats-Erik Pistol |
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| Affiliation: | 1. Solid State Physics/Nanometer Structure Consortium, Lund University, Box 118, S-221 00, Lund, Sweden
2. Polymer & Materials Chemistry/nCHREM, Lund University, S-22100, Lund, Sweden
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| Abstract: | We have investigated individual bulk-like wires of wurtzite InP using photoluminescence, photoluminescence excitation spectroscopy and transmission electron microscopy. Using two different methods we find that the top of the valence band is split, as expected theoretically. This splitting of the valence band is peculiar to wurtzite InP and does not occur in zinc blende InP. We find the energy difference between the two bands to be 40 meV. |
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| Keywords: | wurtzite InP photoluminescence excitation spectroscopy valence band structure |
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