| http://www.w3.org/ns/prov#value | - The screen printed Al (which may be an Al alloy, such as Ag:Al, or may be substantially Al), is applied directly to an the diffusion barrier 90, as shown in FIG. 4J. However, on firing the Al-based metallization drives through the barrier 90, as shown in FIG. 4K, with the Al forming a p+ layer thereunder (not shown).
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