About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Applied Physics Letters
Paper
Properties and thermal stability of the SiO2/GaAs interface with different surface treatments
Abstract
High quality SiO2 films were deposited by plasma-enhanced chemical vapor deposition on GaAs wafers which received different surface treatments. It was found that metal-oxide-semiconductor (MOS) capacitors which received surface nitridation were unstable under high-temperature anneal (600°C). These instabilities are interpreted in terms of free As precipitates at the interface. When, instead, a thin Si layer was deposited on the GaAs surface, stable interfaces were obtained at 600°C. These MOS capacitors appear to show both deep depletion and inversion.