High field-emission stability of offset-thin-film transistor-controlled Al-doped zinc oxide nanowires

Po Yu Yang, Jyh Liang Wang, Wei Chih Tsai, Shui Jinn Wang, Jia Chuan Lin, I. Che Lee, Chia Tsung Chang, Huang Chung Cheng

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7 Citations (Scopus)


Aluminum-doped zinc oxide (AZO) nanowire (NW) arrays incorporating an offset thin-film transistor (offset-TFT) have been proposed to achieve high field-emission (FE) stability. The AZO NW field emission arrays (FEAs) were hydrothermally grown at a low temperature of 85 °C. The uncontrolled AZO NW FEAs demonstrated superior FE characteristics (i.e., turn-on field of ̃2:17 V/μm and threshold field of ̃3:43 V/μm) compared with those of the conventional CNT FEAs grown at a temperature below 600 °C. However, uncontrolled AZO NW FEAs show a larger current fluctuation of 15.6%. Therefore, the offset-TFTs were used to control the AZO NW FEAs. Consequently, the fluctuation of AZO NW FEAs could be significantly reduced to less than 2%. This novel field emission device exhibits good emission stability, low-voltage controllability, lowtemperature processing, and structural simplicity, making it promising for applications in flat panel displays.

Original languageEnglish
Article number04DN07
JournalJapanese journal of applied physics
Issue number4 PART 2
Publication statusPublished - 2011 Apr

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)


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