Patent ID: 6403975
Filing Date: 2002-06-11
Classification: B82Y,G02F,H01L

Abstract:
A semiconductor component, selected from the group comprising a photodetector, a light emitting diode, an optical modulator, and a waveguide, the semiconductor component being configured for operation in the wavelength range from 1.3 &mgr;m to 1.55 &mgr;m and comprising an Si substrate, an active region formed on said substrate, and an Si capping layer on said active region, wherein said active region comprises one of the following layer structures:a) a superlattice comprising a plurality of periods of alternating layers of Si1-yCy and Si1-x-yGexCy with the atomic fraction y of the Si1-x-yGexCy layers being not equal to zero and being different from the atomic fraction y of the Si1-yCy layers, the atomic fraction y of the Si1-yCy layers being not equal to zero; b) a superlattice comprising a plurality of periods of a three-layer structure comprising Si, Si1-yCy and Si1-xGex layers, the atomic fraction y of the Si1-yCy layers being not equal to zero; and c) a superlattice comprising a plurality of periods of a three-layer structure comprising Si, Si1-yCy and Si1-x-yGexCy layers, with the atomic fraction y of the Si1-x-yGexCy layers being not equal to zero and being different from the atomic fraction y of the Si1-yCy layers, the atomic fraction y of the Si1-yCy layers being not equal to zero; wherein x of Ge ranges from six to twenty times y of C in the Si1-x-yGexCy layers and y of C in the Si1-x-yGexCy layers ranges from 0% to 12%; and wherein y of C in the Si1-yCy layers ranges from 0.02 to 0.12 and is different from y of C in the Si1-x-yGexCy layers.