Jan 13, 2020

The Study on Defects of Germanium-on-Insulator Fabricated by a Low Temperature Smart-Cut Process

Germanium-on-insulator (GeOI) was manufactured by a low temperature Smart-cut process. The blistering of H-implanted Ge wafer was first studied and the kinetics of blistering onset (time) as a function of annealing temperature was described to determine the subsequent splitting. Germanium layer transfer was achieved by a 2700C annealing after the atomic level Ge/SiO2 wafer bonding was formed by a 1500C annealing. The defects on the transferred Ge layer were mitigated thanks to the extended annealing and mainly distributed at the rim of GeOI wafer.


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