PATENT CLAIM ANALYSIS

Application Number: 16006905
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["257", "329000"]

Abstract:
Low temperature epitaxial silicon deposition for forming the top source or drain regions of VTFET structures. The methods generally include epitaxially growing a silicon layer with a dopant at a temperature less 500° C. on a first surface and an additional surface to form a single crystalline silicon on the first surface and a polysilicon or amorphous silicon on the additional surface. The epitaxially grown silicon layer is then exposed to an etchant include HCl and germane at a temperature less than 500° C. for a period of time effective to selectively remove the polysilicon/amorphous silicon on the additional surface and form a germanium diffused region on and in an outer surface of the single crystalline silicon formed on the first surface.

Claim (Index 1):
A method for forming a semiconductor structure comprising:\n providing a substrate comprising a first surface comprising single crystalline silicon and at least one additional surface comprising a dielectric material; epitaxially growing a silicon layer with a dopant at a temperature less 500\u00b0 C. on the substrate to form a single crystalline silicon on the first surface and a polysilicon/amorphous silicon on the additional surface; and exposing the epitaxially grown silicon layer to an etchant comprising HCl and germane at a temperature less than 500\u00b0 C. for a period of time effective to selectively remove the polysilicon/amorphous silicon on the additional surface and form a germanium diffused region on and in an outer surface of the single crystalline silicon formed on the first surface, wherein the growing of the silicon layer with the dopant and the exposing of the grown silicon layer to the etchant is cycled, wherein multiple layers of the germanium diffused region is formed in and on the single crystalline silicon formed on the first surface.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 94.0
- Lexical Diversity: 1.98413
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15338653', '15674697', '15825656', '15332181', '15951510']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9089272805438012
- 35 USC 102 Novelty (BERT): 0.597165428791873
- Combined Prediction Score: 0.8777510953686084
- Mean Citation Score: 338.925028
- Max Citation Score: 527.0812400000002
- Similarity Product: 440.99534471284414

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test