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Optical micrographs of a full template made with layer transfer and wafer bonding (left) and solar cells grown on a template (right).
Cross-sectional transmission electron microscopy images of Ge homoepitaxy on a template without damage removal (left) and with damage removal (right). The white line is at the interface of the substrate and the homoepitaxy.
Schematic cross section of the dual junction solar cell grown and processed by Spectrolab. The bonded interface is shown by a dashed line.
Photovoltaic curves (top) and spectral response (bottom) for the solar cells grown on epitaxial templates and on a bulk epi-ready Ge substrate.
High-resolution x-ray diffraction rocking curves for the solar cells grown on epitaxial templates and on a bulk epiready Ge substrate.
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