标题: | Variable-Channel Junctionless Poly-Si FETs: Demonstration and Investigation With Different Body Doping Concentrations |
作者: | Lin, Jer-Yi Tsai, Chan-Yi Shen, Chiuan-Huei Chung, Chun-Chih Kumar, Malkundi Puttaveerappa Vijay Chao, Tien-Sheng 电子物理学系 Department of Electrophysics |
关键字: | Variable channel (VC);nanosheet (NS);junctionless (JL);body doping;polycrystalline silicon |
公开日期: | 1-九月-2018 |
摘要: | In this letter, tri-gate polycrystalline silicon variable-channel junctionless transistors (VC-JLTs), which consist of a counter-doped p-type body below an n(+) active device layer, are successfully demonstrated to show a better performance compared with conventional tri-gate nanosheet (NS) JLTs. Because the potential barrier between the n-channel and p-body in the VC-JLT can be controlled by the gate, the effective conduction channel behaves as a "variable" channel, in which the conduction thickness is thinner or thicker than the physical n(+) thickness for the OFF or ON state, respectively. Consequently, the VC-JLT can turn OFF more efficiently due to the enhanced volume depletion and turn ON with a smaller series resistance owing to the augmented conduction volume. In addition, for the first time, the impact of the body doping concentration is investigated and the performance sensitivities of VC-JLTs in terms of I-ON, V-T, S.S., and DIBL are discussed with respect to the dopant redistribution. Furthermore, the quality factor (I-ON/S.S.) of the VC-JLT is also benchmarked with recently published poly-Si JLTs, showing that the proposed VC-JLT exhibits good S.S. and a record I-ON , which makes it as a promising device for 3-D integrated nanoelectronics. |
URI: | http://dx.doi.org/10.1109/LED.2018.2858227 http://hdl.handle.net/11536/148066 |
ISSN: | 0741-3106 |
DOI: | 10.1109/LED.2018.2858227 |
期刊: | IEEE ELECTRON DEVICE LETTERS |
Volume: | 39 |
起始页: | 1326 |
结束页: | 1329 |
显示于类别: | Articles |