To provide a highly efficient device, this article presents a vertical GaSb tunnel field effect transistor (Hetero-VTFET) both with and without a source pocket in order to achieve the maximum level of performance. This is the first time that a group IV miscible alloy, GaSb, has been used in the source to improve carrier tunneling in a heterojunction of a source (GaSb) and channel (Si). Due to low band gap of GaSb material in source region the carrier tunnelling is high at source channel interface. A heterojunction structure and work function engineering are used to establish an optimal Hetero-Vertical TFET design. In order to analyze the behavior of hetero-Vertical TFETs developed, TCAD Silvaco simulation results are used. In accordance with the proposed optimal structure, the ratio of ION to IOFF(>1014) is higher, the subthreshold swing is shorter (25 mV/Dec), and the ION current is in the range of 10-5 A/m.

Design and Analysis of a GaSb Heterojuncton Vertical TFET with Source Pocket for Work Function Engineering and Improved Analog Performance

Wadhwa G.
Primo
;
Proto A.
Ultimo
2024

Abstract

To provide a highly efficient device, this article presents a vertical GaSb tunnel field effect transistor (Hetero-VTFET) both with and without a source pocket in order to achieve the maximum level of performance. This is the first time that a group IV miscible alloy, GaSb, has been used in the source to improve carrier tunneling in a heterojunction of a source (GaSb) and channel (Si). Due to low band gap of GaSb material in source region the carrier tunnelling is high at source channel interface. A heterojunction structure and work function engineering are used to establish an optimal Hetero-Vertical TFET design. In order to analyze the behavior of hetero-Vertical TFETs developed, TCAD Silvaco simulation results are used. In accordance with the proposed optimal structure, the ratio of ION to IOFF(>1014) is higher, the subthreshold swing is shorter (25 mV/Dec), and the ION current is in the range of 10-5 A/m.
2024
9798350390728
Ambipolarity; low supply voltage; Subthreshold Slope; VTFET
File in questo prodotto:
File Dimensione Formato  
Design and Analysis of a GaSb Heterojuncton Vertical TFET with Source Pocket for Work Function Engineering and Improved Analog Performance.pdf

solo gestori archivio

Descrizione: Full text editoriale
Tipologia: Full text (versione editoriale)
Licenza: Copyright dell'editore
Dimensione 521.56 kB
Formato Adobe PDF
521.56 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2566831
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact