Long Term Stability Study of Planar, Two-Terminal Field Emitters

Ranajoy Bhattacharya, Marco Turchetti, P. Donald Keithley, Karl K. Berggren, Jim Browning

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Two different types of planar nano-scale (4–5 nm) field emitters, bowtie and diode devices, were characterized for use as electron sources for vacuum nano-transistors. I-V measurements were performed, and long-term stability tests were conducted in a dedicated life-time test chamber under high vacuum environment (~5×10 −8 Torr). Experiments showed that the maximum field emission current was ≈ 3 nA from bowtie devices for a bias voltage of 6 V and ≈ 15 nA from diode devices at a bias voltage of 8 V. A long-term stability study showed that although one diode device failed at ≈ 300 hr, three other devices emitted a stable current (< 5 % Drop) for > 1000 hrs. of continuous operation at a DC bias of 6 V.

Original languageAmerican English
Title of host publication2021 22nd International Vacuum Electronics Conference (IVEC)
StatePublished - 1 Jan 2021

Keywords

  • field emission characterization
  • long term stability characterization
  • planar field emitters

EGS Disciplines

  • Electrical and Computer Engineering

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