Impact of Ground Plane Doping and Bottom-Gate Biasing on Electrical Properties in In0.53Ga0.47As-OI MOSFETs and Donor Wafer Reusability Toward Monolithic 3-D Integration With In0.53Ga0.47As Channel

In this paper, we fabricated In
_0.53
Ga
_0.47
As-on insulator (OI) MOSFETs on Si substrates with different doping types to mimic ground plane doping using direct wafer bonding and epitaxial lift-off (ELO) techniques. We investigated the impact of doping types on the ground plane and the backgate biasing, which are important and preferable components in monolithic 3-D (M3D) integration, on the electrical properties of MOSFETs, such as the threshold voltage (V
_T
) and the effective mobility (μ
_eff
). It was found that V
_T
and μ
_eff
were significantly modulated by the backsubstrate doping and the backbiasing. These observations were explained by the change of carrier distributions, which were confirmed by technology computer-aided design simulation. Furthermore, we investigated the reusability of InP donor substrates for sequential epitaxial growth after ELO process toward a cost-effective M3D integration with the In
_0.53
Ga
_0.47
As channel.