Dresden 2006 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 35: II-VI semiconductors III

HL 35.3: Vortrag

Mittwoch, 29. März 2006, 15:00–15:15, POT 151

Oxygen in sputter-deposited ZnTe thin Films — •Stefan Merita, Thorsten Krämer, Angelika Polity, and Bruno K. Meyer — I. Physikalisches Institut, Justus Liebig Universität, Heinrich Buff Ring 16, 35392 Giessen

Bandgap-bowing has been observed in many of the zinc-group-VI compounds, when the anion is substituted with an isovalent element. Recently new results on the ZnO_1−xS_x and ZnO_1−xSe_x system have been presented, but so far only one report on ZnO_1−xTe_x is known. It is to be expected that the latter system shows a particularly strong bowing behaviour. We examine the possibility of synthesizing ZnO_1−xTe_x thin-films by sputter-deposition. Optical transmission measurements, x-ray diffraction (XRD) and energy-dispersive-x-ray-analysis (EDX) give information about the bandgap-energy, crystal structure and composition of the samples. From this data the bowing-parameter of the ZnO_1−xTe_x-system can be deduced.