Review of two-color infrared focal plane arrays

The development background and applied material structure of integrated two-color infrared focal plane are presented,including current international progress.The structure types and characteristics of integrated two-color infrared detector are discussed in detail.The domestic research progress of integrated two-color infrared focal plane is introduced finally.The multi-layer n+-p-P-P-N heterojunction Hg1-xCdxTe film,device fabrication and performance of integrated SW/MW two-color(256×1)×2 infrared focal plane arrays was reported in this paper.At 77 K temperature,the cut-off wavelengths of the two bands were 2.8 μm and 3.9 μm respectively,the peak detectivities D*λp were 1.8×1011cmHz1/2/W and 9.6×1010 cmHz1/2/W.