Pore formation in aluminum films on macroporous silicon during high-temperature annealing |
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Authors: | S. P. Zimin E. S. Gorlachev M. N. Gerke |
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Affiliation: | (1) Yaroslavl State University, Yaroslavl, 150000, Russia;(2) Vladimir State University, Vladimir, 600026, Russia |
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Abstract: | The surface of an aluminum metallization coating applied on a macroporous silicon layer and annealed for 10–60 min at 550°C has been studied by atomic-force and electron microscopy techniques. It is established that the annealing results in the formation of through (open) macropores with lateral dimensions within 400–1300 nm in the aluminum film and in the growth of large hillocks with heights of up to 1.2μ m on the surface, which are located at the edges of these macropores. The geometric parameters of large hillocks are independent of the duration of annealing. |
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