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    Processes For Lift-off And Deposition Of Thin Film Materials

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    5286335.pdf (463.3Kb)
    Date
    2/15/1994
    Author
    Drabik, Timothy J.
    Jokerst, Nan M.
    Allen, Mark G.
    Brooke, Martin A.
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    Abstract
    Novel processes permit integrating thin film semiconductor materials and devices using epitaxial lift off, alignment, and deposition onto a host substrate. One process involves the following steps. An epitaxial layer(s) is deposited on a sacrificial layer situated on a growth substrate. Device layers may be defined in the epitaxial layer. All exposed sides of the epitaxial layer is coated with a transparent carrier layer. The sacrificial layer is then etched away to release the combination of the epitaxial layer and the transparent carrier layer from the growth substrate. The epitaxial layer can then be aligned and selectively deposited onto a host substrate. Finally, the transparent carrier layer is removed, thereby leaving the epitaxial layer on the host substrate. An alternative process involves substantially the same methodology as the foregoing process except that the growth substrate is etched away before the sacrificial layer.
    URI
    http://hdl.handle.net/1853/57155
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