Surface cleaning and nitridation of compound semiconductors using gas-decomposition reaction in Cat-CVD method
1999; Elsevier BV; Volume: 343-344; Linguagem: Inglês
10.1016/s0040-6090(98)01688-5
ISSN1879-2731
AutoresAkira Izumi, Atsushi Masuda, Hideki Matsumura,
Tópico(s)GaN-based semiconductor devices and materials
ResumoIn this paper, we proposed a novel surface cleaning and nitridation technology of compound semiconductors using gas-decomposition reactions in a catalytic chemical vapor deposition (Cat-CVD) system. An NH, gas was used for the surface modification of GaAs(100). X-ray photoelectron spectroscopy measurements revealed that, (1) oxygen related peaks vanished by a 3 min-nitridation treatment at 150 °C, (2) nanometer-thick GaN films were formed on the surface by 30 min-nitridation treatments, (3) nitrided GaAs had good oxidation resistances. Atomic force microscope observations revealed that these surfaces were very smooth (root mean square roughness, 0.28 nm).
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