Tailoring the Threshold Voltage Control of Oxide Thin-Film Transistor by Controlling Electron Injection using PN Semiconductor Heterojunction Structure

  • Jung Hoon Han
  • , Dong Yeob Shin
  • , Chihun Sung
  • , Sung Haeng Cho
  • , Byeong Kwon Ju
  • , Kwun Bum Chung
  • , Sooji Nam

Research output: Contribution to journalConference articlepeer-review

Abstract

The threshold voltage (VT) is the most important parameter in semiconductor devices. To control the VT of the thin-film transistors (TFTs), we propose heterojunction structure of p-type Tellurium (Te) and n-type Aluminum-Doped Indium-Zinc-Tin- Oxide (Al:IZTO) which acts as electron blocking layer and carrier transporting layer, respectively. We investigate the effect of adding the heterojunction layer on the Al:IZTO and demonstrate VT shift up to +20V by adjusting the thickness and single/double deposition of the heterojunction Te layer.

Original languageEnglish
Pages (from-to)1452-1454
Number of pages3
JournalDigest of Technical Papers - SID International Symposium
Volume55
Issue number1
DOIs
StatePublished - 2024
EventInternational Symposium, Seminar, and Exhibition, Display Week 2024 - San Jose, United States
Duration: 12 May 202417 May 2024

Keywords

  • Al:IZTO
  • electron trapping
  • heterojunction
  • metal-oxide thin film transistors
  • tellurium
  • Threshold voltage

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