The influence of metamorphic-buffer layer design on the retention of characteristics of InGaAs/GaAs metamorphic HEMT


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Abstract

We have studied the influence of metamorphic-buffer layer design on the temporal (storage) stability of electrical characteristics of InGaAs/GaAs metamorphic high-electron-mobility transistors (MHEMTs). Using measurements of the Hall effect, it is established that transistor heterostructures with a metamorphic buffer based on In(Al)GaAs/InAlAs superlattices possess maximum values of the concentration and mobility of electrons in the MHEMT channel and show minimum susceptibility to temporal degradation.

About the authors

E. V. Nikitina

St. Petersburg Academic University, Russian Academy of Sciences; Nanotechnology Research and Education Center

Email: alexashpigun@yandex.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 194021

A. A. Lazarenko

St. Petersburg Academic University, Russian Academy of Sciences

Author for correspondence.
Email: alexashpigun@yandex.ru
Russian Federation, St. Petersburg, 194021

E. V. Pirogov

St. Petersburg Academic University, Russian Academy of Sciences

Email: alexashpigun@yandex.ru
Russian Federation, St. Petersburg, 194021

M. S. Sobolev

St. Petersburg Academic University, Russian Academy of Sciences

Email: alexashpigun@yandex.ru
Russian Federation, St. Petersburg, 194021

T. N. Berezovskaya

St. Petersburg Academic University, Russian Academy of Sciences

Email: alexashpigun@yandex.ru
Russian Federation, St. Petersburg, 194021


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