Graphotaxially forming a photosensitive detector array
First Claim
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1. A method for forming a single crystalline layer upon a non-single crystalline substrate, comprising the steps of:
- (a) depositing a glass layer upon the substrate;
(b) placing a seed crystal of a single crystalline material of a first type upon the glass layer;
(c) liquefying the glass layer so as to cause the seed crystal to sink into and be sealed to the glass layer; and
(d) growing from the seed crystal a first layer of material of a first type graphotaxially across the surface of the glass layer.
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Abstract
A polycrystalline or amorphous substrate having a single crystalline layer formed thereupon for making a photosensitive detector array and a method for forming the same are disclosed. The single crystalline layer is grown by graphotaxy, i.e. lateral epitaxy, upon the non-single crystalline substrate. A seed crystal of the material which will comprise the layer to be grown is embedded in the substrate. Graphotaxial growth occurs from the seed crystal and travels across the surface of the substrate. Various methods of obtaining graphotaxial growth are disclosed.
33 Citations
26 Claims
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1. A method for forming a single crystalline layer upon a non-single crystalline substrate, comprising the steps of:
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(a) depositing a glass layer upon the substrate; (b) placing a seed crystal of a single crystalline material of a first type upon the glass layer; (c) liquefying the glass layer so as to cause the seed crystal to sink into and be sealed to the glass layer; and (d) growing from the seed crystal a first layer of material of a first type graphotaxially across the surface of the glass layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for forming a single crystalline material upon a non-single crystalline substrate comprising the steps of:
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(a) graphotaxially growing a first layer of material of a first type upon a first substrate; (b) cutting chips from the first substrate for use as seed chips; (c) embedding the seed chips in a cavity formed in a second substrate, the second substrate having a glass layer substantially covering its upper surface; and (d) growing a first layer of seed material of a first type graphotaxially across the surface of the second substrate. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification