Abstract
We report avalanche photodiodes fabricated from a previously uncharacterized material system, AlxIn1-xAsySb1-y digital alloy. A series of AlxIn1-xAsySb1-y (x: 0.3~0.7) p-i-n avalanche photodiodes have been grown on GaSb substrate. Dark current characteristics, avalanche multiplication, external quantum efficiency, and excess noise are presented. Very low excess noise, corresponding to k = 0.03~0.05, has been observed.
© 2016 Optical Society of America
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