Tunneling FET With Embedded P+ Pocket as a High Sensitivity Biosensor for Label-Free Detection | ||
| Journal of Modeling and Simulation in Electrical and Electronics Engineering | ||
| دوره 4، شماره 2 - شماره پیاپی 16، پاییز 2024، صفحه 19-25 اصل مقاله (1017.13 K) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/mseee.2025.36592.1196 | ||
| نویسندگان | ||
| Milad Azarkerdar1؛ Ali Naderi* 2 | ||
| 1Electrical Engineering Department, Energy Faculty, Kermanshah University of Technology, Kermanshah, Iran. | ||
| 2Electrical Engineering Department, Engineering Faculty, Imam Khomeini International University, Qazvin, Iran. | ||
| چکیده | ||
| In this paper, an efficient structure for tunneling field effect transistors (TFETs) with P+ pocket is proposed for label-free detection of biomolecules. This structure includes a double gate TFET with P+P-N+ doping profile for source, channel, and drain regions and an embedded P+ pocket in the channel to control the band-to-band tunneling (BTBT). The biomolecules are captured in the cavity region and affect the band bending. The capacitive behavior of biomolecules causes further band bending where their dielectric constant is increased. The presence of P+ pocket at the source side of TFET causes more changes in the capacitive behavior and in current and consequently increases the sensitivity. For the detection of the biomolecule with K=4, the proposed structure shows more than 60% improvement in sensitivity. It enhances the sensitivity for all investigated dielectric constants, where the enhancement is more considerable for biomolecules with higher dielectric constants. For more evaluation, the biosensor is assessed in different widths and impurity densities of P+ region. It demonstrates that the proposed structure can efficiently tolerate the variations in physical dimension and impurity concentration while it maintains higher sensitivities. | ||
| کلیدواژهها | ||
| Tunneling FET؛ Biomolecule؛ Sensitivity؛ Band-to-Band Tunneling؛ Band Bending | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 278 تعداد دریافت فایل اصل مقاله: 246 |
||
| تعداد نشریات | 22 |
| تعداد شمارهها | 723 |
| تعداد مقالات | 10,408 |
| تعداد مشاهده مقاله | 72,950,496 |
| تعداد دریافت فایل اصل مقاله | 64,603,907 |