Abstract
Reduction of dark current in DWELL photodetectors using resonant tunneling barriers is presented. At 77 K, the dark current is reduced by a factor of 1000 in positive bias. The peak detectivity is 4 times 109 cm.Hz1/2 W-1 (Vb= -1.1 V, 77 K at lambdapeak = 11 mum).
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