blocked impurity band detector


Also found in: Acronyms.

blocked impurity band detector

[′bläkt im′pyu̇r·əd·ē ¦band di‚tek·tər]
(electronics)
A detector of long-wavelength infrared radiation consisting of a heavily doped extrinsic photoconductor on which an undoped intrinsic layer is grown epitaxially to prevent dark current from flowing in the impurity band.