Visible-blind ultraviolet imagers consisting of 8×8 AlGaN p-i-n photodiode arrays

K. C. Kim, Y. M. Sung, I. H. Lee, C. R. Lee, M. D. Kim, Y. Park, T. G. Kim

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We report successful development of both discrete ultraviolet (UV) photodiodes and UV imagers consisting of 8×8 backside-illuminated AlGaN p-i-n photodiode arrays. The discreteAlGaN p-i-n photodiodes showed a responsivity of 0.1 AW, a cutoff wavelength of 350 nm, an external quantum efficiency of 35%, and a response time of 4.1 ns. Then, 8×8 AlGaN p-i-n photodiode arrays were fabricated, followed by hybridizations with readout integrated circuits manufactured using a 0.5 μm 2poly-3metal N-well complementary metal-oxide semiconductor process by gold stud bumping. The 8×8 focal plane array UV imagers operated successfully by sensing radiation in the 300-350 nm spectral bands.

Original languageEnglish
Pages (from-to)641-644
Number of pages4
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Issue number3
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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