Вышедшие номера
Investigation on high-kappa dielectric for low leakage AlGaN/GaN MIS-HEMT device, using material selection methodologies
Полная версия: 10.1134/S1063782618040073
Kumar Reddy Baikadi Pranay1, Ravi Teja Karri Babu1, Kandpal Kavindra1
1Department of Electrical & Electronics Engineering, Birla Institute of Technology and Science Pilani, Rajasthan, India
Email: kavindra.kandpal@pilani.bits-pilani.ac.in
Выставление онлайн: 20 марта 2018 г.

This paper analyzes various high-kappa dielectrics for low leakage AlGaN (Aluminium Gallium Nitride)/GaN (Gallium Nitride) MIS-HEMT (Metal Insulator Semiconductor - High Electron Mobility Transistor) device. The investigation is carried out by examining different attributes such as the dielectric constant, conduction band offset, and energy band gap of the dielectric which are crucial for a good dielectric-AlGaN interface. This work also computes the values of band offsets of different dielectrics to AlGaN analytically. The selection of the most promising dielectric is done using three different multi-criteria decision making methods (MCDM) namely the Ashby, VIKOR (VIseKriterijumska Optimizacija I Kompromisno Resenje in Serbian, meaning Multicriteria Optimization and Compromise Solution) and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution). All the analyses point to La2O3 as the best gate dielectric for AlGaN/GaN MIS-HEMT device.