Abstract
Optical interconnection is projected to replace Cu wires as the data bandwidth exceeds the capacity of application processors. For compatibility with Si technologies, hetero-epitaxially grown Ge-on-Si is appropriate platform for fabricating optical sources. We investigated the effect of two-step growth on the strain in the epitaxial Ge-on-Si using an ultra-high vacuum E-beam evaporator. A low temperature regime produced a smooth Ge buffer layer without three-dimensional and a high growth temperature regime induced tensile strain in the epitaxial Ge films. The initial 0.10% of tensile stain on the as-grown Ge films was further increased to 0.23% after subsequent post-annealing.
Original language | English |
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Pages (from-to) | P12-P14 |
Journal | ECS Solid State Letters |
Volume | 4 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2014 |
Bibliographical note
Publisher Copyright:© 2014 The Electrochemical Society.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering