Photon upconversion in degenerately sulfur doped InP nanowires.

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Photon upconversion in degenerately sulfur doped InP nanowires. / Mergenthaler, Kilian; Lehmann, Sebastian; Wallentin, J; Zhang, Wei; Borgström, Magnus; Yartsev, Arkady; Pistol, Mats-Erik.

I: Nanoscale, Vol. 7, Nr. 48, 2015, s. 20503-20509.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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TY - JOUR

T1 - Photon upconversion in degenerately sulfur doped InP nanowires.

AU - Mergenthaler, Kilian

AU - Lehmann, Sebastian

AU - Wallentin, J

AU - Zhang, Wei

AU - Borgström, Magnus

AU - Yartsev, Arkady

AU - Pistol, Mats-Erik

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060), Solid State Physics (011013006)

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

U2 - 10.1039/c5nr05472a

DO - 10.1039/c5nr05472a

M3 - Article

VL - 7

SP - 20503

EP - 20509

JO - Nanoscale

JF - Nanoscale

SN - 2040-3372

IS - 48

ER -