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The density and energy distribution of electrically active interface defects in the (100)Si/SiOx/HfO2 system are presented. Experimental results are analysed for HfO2 thin films deposited by atomic layer deposition and metal-organic chemical vapour deposition on (100)Si substrates. The paper discusses the origin of the interface states, and their passivation in hydrogen over the temperature range...
The reliability of the gate oxide in microelectronics, i.e., the ability of a thin film of this material to retain its excellent dielectric properties while subjected to high electric fields, has been a perennial concern over the last 40-45 years. Two dominant gate oxide failure mechanisms, dielectric breakdown and the negative bias instability, have continued to cause concern as MOSFET devices have...
The prepared (La-Mn) oxide thin films on glass and p-Si substrates have been characterised by UV-VIS absorption spectroscopy, energy dispersion X-ray fluorescence (EDXRF) and X-ray diffraction (XRD). The XRF spectrum was used to determine the weight fraction ratio of Mn to La in the prepared samples. The optical studies determine the optical bandgaps of the prepared samples and its variation with...
In this paper, the electrical and structural analysis of HfO2 thin films formed by ion assisted deposition are reported. The electrical results show excellent layer uniformity and very good reproducibility before post deposition annealing. The influence of the oxygen flow during the growth upon the electrical properties of the film has also been investigated. Forming gas annealing removed the hysteresis...
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