Analog parameters of solid source Zn diffusion In X Ga1−X As nTFETs down to 10 K

Made available in DSpace on 2018-12-11T16:44:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-10-28 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The analog parameters of In0.53Ga0.47As and In0.7Ga0.3As nTFETs with solid state Zn diffused source are investigated from room temperature down to 10 K. The In0.7Ga0.3As devices are shown to yield a higher on-state current than the In0.53Ga0.47As counterparts, and, consequently, a higher transconductance due to the lower bandgap. At the same time, the In0.7Ga0.3As devices present higher output conductance values. The balance between these two factors results in a higher intrinsic voltage gain (A V) for In0.7Ga0.3As nTFETs at low gate bias and similar A V for both devices at high gate voltage. The transconductance is reduced at low temperature due to the increase of the bandgap, while the output conductance is decreased (improved) upon cooling, which is related to the reduction of the drain dependence of the BTBT generation rate. The temperature influence is more pronounced in the output conductance than in the transconductance, resulting in an increase of the intrinsic voltage gain at low temperatures for both devices and bias. Imec, Kapeldreef 75 LSI/PSI/USP University of S�o Paulo, Av. Prof. Luciano Gualberto, trav. 3, no 158 UNESP Univ. Estadual Paulista, Profa. Isette Correa Font�o 305 KU Leuven, Kasteelpark Arenberg 10 UNESP Univ. Estadual Paulista, Profa. Isette Correa Font�o 305