Abstract
Diffusion of Cu, Ag, Au, Ge and Zn in single crystal gallium antimonide has been carried out by measuring Hall effect according to van der Pauw, conductivity, energy dispersive X-ray (EDX) and surface electron microscopy. The best results have been obtained in excess of antimony. The resulting diffusion data in GaSb are diffusivity Do, activation enthalpy Q, carrier density p and mobility µ at 300 K:
Ag: Do=1.8·10−4 cm2 s−1, Q=1.2 eV, p=6·1018 cm−3, µ=550 cm2 (Vs)−1
Au: Do=6.6·10+3 cm2 s−1, Q=2.7 eV, p=5·1018 cm−3, µ=500 cm2 (Vs)−1
Cu: Do=3.2·10+8 cm2 s−1, Q=2.7 eV, p=2·1018 cm−3, µ=150 cm2 (Vs)−1
Zn: Do=9.2·10−2 cm2 s−1, Q=1.8 eV, p=2·1020 cm−3, µ=80 cm2 (Vs)−1
Ge: Do=1.0·10−1 cm2 s−1, Q=1.7 eV, p=1·1019 cm−3, µ=320 cm2 (Vs)−1.
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Nassr, K.M., Lübbers, M., Šestákova, V. et al. Diffusion of Noble Metals, Zn and Ge in GaSb Single Crystals. Journal of Thermal Analysis and Calorimetry 54, 49–56 (1998). https://doi.org/10.1023/A:1010100431546
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DOI: https://doi.org/10.1023/A:1010100431546