| 1. | The overlayer is called an epitaxial film or epitaxial layer.
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| 2. | Formation of this epitaxial layer occurs at the substrate surface.
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| 3. | Normally the epitaxial layers are lattice matched ( which restricts the choice of bandgap etc ).
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| 4. | One of the first successful mercury probe applications was the characterization of epitaxial layers grown on silicon.
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| 5. | It is critical to device performance to monitor the doping level and thickness of an epitaxial layer.
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| 6. | Strain in the epitaxial layer and substrate is visible as elongated streaks parallel to the diffraction vector direction.
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| 7. | Micropipes and screw dislocations in epitaxial layers are normally derived from the substrates on which the epitaxy is performed.
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| 8. | Devices fabricated in lightly doped epitaxial layers grown on heavily doped substrates are also less susceptible to latch-up.
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| 9. | The growth conditions for such epitaxial layers can cause some ceramic substrates to form high densities of defects that can alter their properties.
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| 10. | The resistance of the epitaxial layer is more important than it is for a transistor, as the current must cross its entire thickness.
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