Bf. Levine et al., CHARACTERIZATION OF WAFER BONDED PHOTODETECTORS FABRICATED USING VARIOUS ANNEALING TEMPERATURES AND AMBIENTS, Applied physics letters, 71(11), 1997, pp. 1507-1509
A detailed study of the important role of temperature and gas ambient
on the bonding between Si and InGaAs wafers was performed. The heteroi
nterface was characterized by fabricating p-i-n photodetectors and mea
suring the forward and reverse currents, the capacitance, the absolute
quantum efficiency, and the response bandwidth. Clear evidence for a
thin tunneling barrier is found for nonoptimum fusing conditions. (C)
1997 American Institute of Physics.