PATENT CLAIM ANALYSIS

Application Number: 16081864
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["216", "099000"]

Abstract:
It discloses a texturing method for a diamond wire cut polycrystalline silicon slice, including the following steps: firstly, immersing the diamond wire cut polycrystalline silicon slice into a mixed aqueous solution of an alkali solution and an alkali reaction control agent, removing a damaged layer on a surface of the silicon slice, and then immersing the silicon slice into a hydrofluoric acid solution containing inorganic ions and organic molecules for reaction; secondly, pretreating the polycrystalline silicon surface by a mixed solution of hydrofluoric acid and hydrogen peroxide, adding a pore-forming regulator at the same time, and finally texturing the surface of the silicon slice by a mixed acid solution of hydrofluoric acid and nitric acid.

Claim (Index 1):
A texturing method for a diamond wire cut polycrystalline silicon slice, characterized by comprising the following steps:\n (1) a first procedure: immersing the diamond wire cut polycrystalline silicon slice into a mixed aqueous solution of an alkali solution and an alkali reaction control agent, and removing a damaged layer on a surface of polycrystalline silicon to form a silicon slice convex microstructure; the alkali reaction control agent comprises one or more of polycarboxylic acid, isooctyl polyoxyethylene ether phosphate, allyl alcohol polyoxyalkyl ether, polyethylene glycol monomethyl ether, polyethylene glycol, hexadecyl trimethyl ammonium chloride or a perfluorooctyl amphoteric phosphate fluorocarbon surfactant; (2) a second procedure: immersing the polycrystalline silicon slice with the convex microstructure into a hydrofluoric acid solution containing inorganic ions and organic molecules to deposit metal particles on the surface of the silicon slice; (3) a third procedure: forming pores in the prepared silicon slice in a mixed solution containing a pore-forming regulator, hydrofluoric acid and hydrogen peroxide; the pore-forming regulator comprises one or more of glucuronic acid, galacturonic acid, fatty acid amide, fatty alcohol polyoxyethylene ether, sodium alginate, sodium cellulose, glucosamine, sodium carboxylate, octadecatrienoic acid or oleic acid; and (4) a fourth procedure: after cleaning the silicon slice, texturing the surface of the silicon slice by a mixed acid solution of hydrofluoric acid and nitric acid.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 96.0
- Lexical Diversity: 2.11864
- Patent Class: 216.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14878925', '15634302', '13824415', '13423745', '10555141']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7628028655725843
- 35 USC 102 Novelty (BERT): 0.4984938573339001
- Combined Prediction Score: 0.7363719647487159
- Mean Citation Score: 230.29257
- Max Citation Score: 256.18826
- Similarity Product: 176.46002447154285

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test