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HL: Fachverband Halbleiterphysik
HL 36: Poster Ib
HL 36.28: Poster
Dienstag, 8. März 2016, 15:00–19:00, Poster A
Investigation of the impact of gold nanodots deposited in porous GaP template by Raman Spectroscopy — •Andrei Tiron1,2, Cameliu Himcinschi2, Jens Kortus2, Eduard Monaico1, and Ion Tiginyanu1,3 — 1Technical University of Moldova, Stefan cel Mare Avenue 168, MD-2004 Chisinau, Republic of Moldova — 2TU Bergakademie Freiberg, Institute of Theoretical Physics, Leipziger Str. 23, D-09599 Freiberg, Germany — 3Institute of Electronic Engineering and Nanotechnologies, Academy of Sciences of Moldova, Academy str. 3/3, Chisinau MD-2028, Republic of Moldova
Porous gallium phosphide (GaP) without and with gold deposited inside the pores were investigated by micro-Raman spectroscopy. The anodization causes a breakdown of the polarization selection rules, inherent to a (100) surface, accompanied by a downward shift of the LO-phonon frequency [1]. The appearance of two surface-related phonon modes in porous GaP templates without and covered with gold nanodots was detected. The influence of the temperature and laser annealing on the Raman spectra also were investigated. Au deposition in porous GaP templates induced an enhancement of the Raman signal.
[1] Micro-Raman-scattering study of surface-related phonon modes in porous GaP. (I. M. Tiginyanu, G. Irmer, J. Monecke, H. L. Hartnagel) Phys. Rev. B, volume 55, 6739-6742 (1997).