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This paper reviews the development history and current status of HgCdTe based IR detector of which the study had started from 1980's in South Korea. It covers the fields from single element diode to 2-dimensional IR detector as well as dewar technology. The past studies of large area single element diode, linear array detector, 2-D IRFPAs are reported which include HgCdTe diode array, ROIC and hybridization technologies. Thanks to the sound cooperation between academia, research institute, industry, and government, current progress of 2-D IR detector shows high performance and reliability to be able to be utilized in fields. Finally, prospective future of IR detector in Korea is addressed.

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