an infrared detector device comprised of a solid state , radiation ha and high resolution monolithic ir focal plane array for imaging applications . the monolithic ir focal plane array has a heterostructure injection scheme that prevents charge coupled device &# 34 ; well filling &# 34 ; by using a heterojunction barrier between the absorber , or detector layer , and the transfer layer . injection of signal charge into a ccd multiplexer is controlled by establishing a punch through condition between the absorber layer and the ccd channel . the detector layer and the ccd multiplexer are on different planes of the focal plane array .