Photodegradation of surface passivated GaAs nanowires

P. A. Alekseev, A. N. Smirnov, V. Yu Davydov, Tuomas Haggrén, Harri Lipsanen, M. S. Dunaevskiy, V. L. Berkovits

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Efficiency of in situ AlGaAs and GaP and ex situ nitride surface passivation of p+ GaAs nanowires was studied. The efficiency was estimated by comparing of the photoluminescence intensity of the passivated nanowires with the unpassivated nanowire. The AlGaAs and nitride passivation lead to the increasing of the PL intensity by three orders of magnitude while the GaP passivation increases PL intensity only by one order. Photodegradation of the passivated NWs under intensive laser illumination was observed. AlGaAs, GaP and nitride passivated NWs photodegrade after one-minute exposure under laser power densities of 500, 300 and 30 kW/cm2, respectively.

Original languageEnglish
Article number012002
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 23 Apr 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Metamaterials and Nanophotonics - St. Petersburg, Russian Federation
Duration: 15 Jul 201919 Jul 2019
Conference number: 4

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    Alekseev, P. A., Smirnov, A. N., Davydov, V. Y., Haggrén, T., Lipsanen, H., Dunaevskiy, M. S., & Berkovits, V. L. (2020). Photodegradation of surface passivated GaAs nanowires. Journal of Physics: Conference Series, 1461(1), [012002].