: Wurtzite AlGaAs is a technologically promising yet unexplored material. Here we study it both experimentally and numerically. We develop a complete numerical model based on an 8-band k→·p→ method, including electromechanical fields, and calculate the optoelectronic properties of wurtzite AlGaAs nanowires with different Al content. We then compare them with our experimental data. Our results strongly suggest that wurtzite AlGaAs is a direct band gap material. Moreover, we have also numerically obtained the band gap of wurtzite AlAs and the valence band offset between AlAs and GaAs in the wurtzite symmetry.

Barettin, D., Shtrom, I.v., Reznik, R.r., Mikushev, S.v., Cirlin, G.e., Auf der Maur, M., et al. (2023). Direct Band Gap AlGaAs Wurtzite Nanowires. NANO LETTERS, 23(3), 895-901 [10.1021/acs.nanolett.2c04184].

Direct Band Gap AlGaAs Wurtzite Nanowires

Auf der Maur, Matthias;
2023-02-08

Abstract

: Wurtzite AlGaAs is a technologically promising yet unexplored material. Here we study it both experimentally and numerically. We develop a complete numerical model based on an 8-band k→·p→ method, including electromechanical fields, and calculate the optoelectronic properties of wurtzite AlGaAs nanowires with different Al content. We then compare them with our experimental data. Our results strongly suggest that wurtzite AlGaAs is a direct band gap material. Moreover, we have also numerically obtained the band gap of wurtzite AlAs and the valence band offset between AlAs and GaAs in the wurtzite symmetry.
8-feb-2023
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/01 - ELETTRONICA
English
GaAs/AlGaAs
Modeling
Nanowires
k⃗·p⃗
wurtize
Barettin, D., Shtrom, I.v., Reznik, R.r., Mikushev, S.v., Cirlin, G.e., Auf der Maur, M., et al. (2023). Direct Band Gap AlGaAs Wurtzite Nanowires. NANO LETTERS, 23(3), 895-901 [10.1021/acs.nanolett.2c04184].
Barettin, D; Shtrom, Iv; Reznik, Rr; Mikushev, Sv; Cirlin, Ge; Auf der Maur, M; Akopian, N
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/317359
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