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Issue 48, 2015
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Photon upconversion in degenerately sulfur doped InP nanowires

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Abstract

Radiative recombination in degenerately n-doped InP nanowires is studied for excitation above and below the Fermi energy of the electron gas, using photoluminescence. Laser-induced electron heating is observed, which allows absorption below the Fermi energy. We observe photon upconversion where photo-excited holes recombine with high |k| electrons. This can be attributed to hole scattering to high |k|-values, and the temperature dependence of this process is measured. We show that hole relaxation via phonon scattering can be observed in continuous wave excitation luminescence measurements.

Graphical abstract: Photon upconversion in degenerately sulfur doped InP nanowires

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The article was received on 12 Aug 2015, accepted on 25 Oct 2015 and first published on 10 Nov 2015


Article type: Paper
DOI: 10.1039/C5NR05472A
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Citation: Nanoscale, 2015,7, 20503-20509
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    Photon upconversion in degenerately sulfur doped InP nanowires

    K. Mergenthaler, S. Lehmann, J. Wallentin, W. Zhang, M. T. Borgström, A. Yartsev and M.-E. Pistol, Nanoscale, 2015, 7, 20503
    DOI: 10.1039/C5NR05472A

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