Verfahren zur Herstellung von Sperrschichten mit geringem Sperrstrom in Siliciumkarbid-Halbleitern
Silicon carbide barrier layer devices, esp. diodes, are immersed in dilute hydrofluoric acid with reverse bias applied across the barrier layer. The etching effects a significant reduction of leakage current by limiting the volume effect current flow, e.g. with 100 V reverse voltage from typically 2...
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Zusammenfassung: | Silicon carbide barrier layer devices, esp. diodes, are immersed in dilute hydrofluoric acid with reverse bias applied across the barrier layer. The etching effects a significant reduction of leakage current by limiting the volume effect current flow, e.g. with 100 V reverse voltage from typically 200 uA to 0.02/ua. |
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