skip to main content

SciTech ConnectSciTech Connect

Title: Characteristics of stress-induced defects under positive bias in high-k/InGaAs stacks

The introduction of InGaAs as a channel material for complementary metal-oxide-semiconductor technology presents major challenges in terms of the characterization of the various defects that affect the performance and reliability. Understanding the generation of defects by constant voltage stresses is crucial in terms of their concentration profiles and energy levels. In particular, we want to understand the real nature of the defects responsible for the dispersion of C-V in strong accumulation. Here, we show that the degradation under positive bias of metal/Al{sub 2}O{sub 3}/n-InGaAs capacitors reveals two contributions depending on the temperature that affects the C-V curves in a different way. Based on features of stressed C-V curves, it is possible to estimate the onset point of the distribution of border traps near the midgap condition. The results suggest that these defects are strongly related to the characteristics of the InGaAs substrate.
Authors:
; ; ;  [1]
  1. Department of Materials Science and Engineering, Technion-Israel Institute of Technology, 32000 Haifa (Israel)
Publication Date:
OSTI Identifier:
22303868
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 25; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; CAPACITORS; CRYSTAL DEFECTS; DISPERSIONS; DISTRIBUTION; ELECTRIC POTENTIAL; GALLIUM ARSENIDES; INDIUM ARSENIDES; METALS; MOS TRANSISTORS; RELIABILITY; SEMICONDUCTOR MATERIALS; STACKS; STRESSES; SUBSTRATES; TRAPS