Berlin 2005 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 17: Poster Ib
HL 17.62: Poster
Freitag, 4. März 2005, 16:30–19:00, Poster TU F
Optical and magnetic properties of rare earth implanted AlN — •G. Öhl1, U. Vetter1,2, M. Uhrmacher1, C. Ronning1, and H. Hofsäss1 — 1Georg-August-Universität, II. Physikalisches Institut, Friedrich-Hund-Platz 1, 37077 Göttingen — 2Philipps-Universität, AG Oberflächenphysik, Renthof 5, 35032 Marburg
Rare earths (RE) in AlN already have been studied extensively. Nevertheless, as shown in recent studies e.g. on the system AlN:Gd [1,2], where single systems with moderate Lanthanide doses implanted were investigated - RE in AlN show very promising features, e.g. for the use as electroluminescent emitters.
In this study we investigated single (at high doses) and double systems of RE in AlN thin films grown on SiC. The RE were implanted at different energies and fluences giving a square implantation profile. RBS analysis was performed to monitor the annealing behaviour of the implantation profile, while possible clustering of the metal ions was monitored by XRD measurements. Optical properties were investigated by means of temperature dependent time-resolved cathodoluminescence studies, life-time and energy-transfer studies were performed on selected radiative intra-4f electron transitions of the implanted lanthanide ions. In addition, magnetic properties of the RE implanted AlN will be discussed.
(1) U. Vetter et al., Appl. Phys. Lett. 83, 11 (2003) (2) J.B. Gruber, U. Vetter et al., Phys. Rev. B 69 (2004)