title: Photon upconversion in degenerately sulfur doped InP nanowires.
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.
authors.affiliation: Department of Solid State Physics/The Nanaometer Structure Consortium, Lund University, Box 118, 221 00 Lund, Sweden. kilian.mergenthaler@ftf.lth.se.
authors.forename: K
authors.initials: K
authors.lastname: Mergenthaler
authors.affiliation: Department of Solid State Physics/The Nanaometer Structure Consortium, Lund University, Box 118, 221 00 Lund, Sweden. kilian.mergenthaler@ftf.lth.se.
authors.forename: S
authors.initials: S
authors.lastname: Lehmann
authors.affiliation: Institute for X-ray Physics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Wallentin
authors.affiliation: Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden.
authors.forename: W
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Department of Solid State Physics/The Nanaometer Structure Consortium, Lund University, Box 118, 221 00 Lund, Sweden. kilian.mergenthaler@ftf.lth.se.
authors.forename: M T
authors.initials: MT
authors.lastname: Borgström
authors.affiliation: Division of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Yartsev
authors.affiliation: Department of Solid State Physics/The Nanaometer Structure Consortium, Lund University, Box 118, 221 00 Lund, Sweden. kilian.mergenthaler@ftf.lth.se.
authors.forename: M-E
authors.initials: ME
authors.lastname: Pistol