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Ultra high-Speed InAlAs/InGaAs High Electron Mobility Transistor

  • Meryleen Mohapatra
  • Nutan Shukla
  • A.K. Panda
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 308)

Abstract

This work deals with the performance evaluation and characterization of an InAlAs/InGaAs-based high electron mobility transistor with different gate lengths viz. 50, 35, and 15 nm. A maximum drain current (I dss) of 398 mA/mm is achieved for a 15-nm-gate-length device with a V ds of 0.4 V as compared to 50- and 35-nm-gate-length HEMT with a current of 368 mA/mm and 384 mA/mm, respectively. A cutoff frequency (f T ) of 1.3 THz is reported for a 15 nm gate length, while a cutoff frequency of 625 GHz and 1.05 THz has been obtained for 50- and 35-nm-gate-length devices. The increase in cutoff frequency for a 15-nm-gate-length InAlAs/InGaAs-based HEMT results due to the decrease in transit time. A maximum oscillation frequency (f max) of 1.8 THz has been obtained for a 15-nm-gate-length device whereas a f max of 1.35 and 1.58 THz has been achieved for a 50- and 35-nm-gate-length HEMT. So, the device with ultrashort gate length performs better as compared to other two gate length devices.

Keywords

Ultrashort gate length Pseudomorphic HEMT InAlAs InGaAs 

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Copyright information

© Springer India 2015

Authors and Affiliations

  1. 1.ECE DepartmentSiksha ‘O’ Anusandhan UniversityBhubaneswarIndia
  2. 2.ECE DepartmentNISTBerhampurIndia

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