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Negative bias enhanced photo instability of top gate IGZO TFT

  • Sang Hee Ko Park
  • , Minki Ryu
  • , Kyounghwan Kim
  • , Shinhyuk Yang
  • , Chi Sun Hwang
  • , Chunwon Byun
  • , Sung Min Yoon
  • , Himchan Oh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

We have investigated the effect of active layer thickness in top gate IGZO TFT on the negative bias enhanced photo instability. While the negative bias stability of top gate IGZO TFT was not affected by the active layer thickness in the dark, negative Vth shift is increased with the increase of the active layer thickness under visible white light illumination during negative bias stress. We attributed this much increased negative Vth shift to the increase of donor species as well as the increased positive charge trapping in the gate insulator.

Original languageEnglish
Title of host publication10th International Meeting on Information Display and International Display Manufacturing Conference and Asia Display 2010, IMID/IDMC/ASIA Display 2010
Pages169-170
Number of pages2
Publication statusPublished - 2010
Event10th International Meeting on Information Display and International Display Manufacturing Conference and Asia Display 2010, IMID/IDMC/ASIA Display 2010 - Seoul, Korea, Republic of
Duration: 11 Oct 201015 Oct 2010

Publication series

NameProceedings of International Meeting on Information Display
ISSN (Print)1738-7558

Conference

Conference10th International Meeting on Information Display and International Display Manufacturing Conference and Asia Display 2010, IMID/IDMC/ASIA Display 2010
Country/TerritoryKorea, Republic of
CitySeoul
Period11/10/1015/10/10

Keywords

  • IGZO TFT
  • NBIS
  • Oxide TFT
  • Photo stability

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