Journal of Semiconductors>>2017,Volume 38>>Issue 12:124003-8    < Previous Article | Next Article >  
Sarabdeep Singh, Ashish Raman and Naveen Kumar.Design and optimization analysis of dual material gate on DG-IMOS[J].Journal of Semiconductors,2017,38(12):124003-8
Design and optimization analysis of dual material gate on DG-IMOS
Abstract: An impact ionization MOSFET (IMOS) is evolved for overcoming the constraint of less than 60 mV/decade sub-threshold slope (SS) of conventional MOSFET at room temperature. In this work, first, the device performance of the p-type double gate impact ionization MOSFET (DG-IMOS) is optimized by adjusting the device design parameters. The adjusted parameters are ratio of gate and intrinsic length, gate dielectric thickness and gate work function. Secondly, the DMG (dual material gate) DG-IMOS is proposed and investigated. This DMG DG-IMOS is further optimized to obtain the best possible performance parameters. Simulation results reveal that DMG DG-IMOS when compared to DG-IMOS, shows better ION, ION/IOFF ratio, and RF parameters. Results show that by properly tuning the lengths of two materials at a ratio of 1.5 in DMG DG-IMOS, optimized performance is achieved including ION/IOFF ratio of 2.87×109 A/μm with ION as 11.87×10-4 A/μm and transconductance of 1.06×10-3 S/μm. It is analyzed that length of drain side material should be greater than the length of source side material to attain the higher transconductance in DMG DG-IMOS.
Keywords: impact ionization MOSFET (IMOS)  avalanche breakdown  sub-threshold slope  dual material gate (DMG)  biosensor
Author NameAffiliation
Sarabdeep Singh Department of Electronics and Communication Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar 144011, India 
Ashish Raman Department of Electronics and Communication Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar 144011, India 
Naveen Kumar Department of Electronics and Communication Engineering, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar 144011, India 
 
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