Abstract
A novel technique for measuring the low-field electron mobility as a function of depth into the active layer of a nonuniformly doped GaAs Schottky barrier field-effect transistor (MESFET) has been developed. This technique is based on measurements of the current-voltage characteristics and the transconductance under low-field conditions as well as capacitance-voltage measurements. By comparison of the measured electron mobility with previous theoretical results the compensation ratio profile can be determined. Measurements on ion-implanted and epitaxial GaAs MESFET’s show that, for depths >0.1 μm, the nonuniform mobility profile is correlated with the donor density profile and sensitive to the compensation ratio, indicating that ionized impurity scattering is important over the range of carrier densities typically used in these devices.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
