Single-Grain Germanium TFTs

We review our recent achievements in location-control of Ge grains and high performance single-grain (SG) Ge thin film transistor (TFT) fabricated inside a Ge grain. Large Ge grains having a grain size of 10 µm were obtained at predetermined positions by the µ-Czochralski process using excimer-laser and sputtered a-Ge layer. TFTs were fabricated...

Single Grain Si TFTs for RF and 3D ICs

Single-grain Si TFTs have been fabricated using accurate 2D location control of large Si grain with the ?-Czochralski process. TFTs fabricated inside the crystalline islands of 6 ?m show a mobility (600cm2/Vs) as high as that of the SOI counterpart, despite of the low-temperature (<350oC) process. By applying a tensile stress into the grain, the...