PATENT CLAIM ANALYSIS

Application Number: 15938246
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["136", "255000"]

Abstract:
A solar cell comprising a bulk germanium silicon growth substrate; a diffused photoactive junction in the germanium silicon substrate; and a sequence of subcells grown over the substrate, with the first grown subcell either being lattice matched or lattice mis-matched to the growth substrate.

Claim (Index 13):
The four junction solar cell assembly as defined in  claim 1 , further comprising:\n a distributed Bragg reflector (DBR) layer adjacent to and beneath the third solar subcell and arranged so that light can enter and pass through the third solar subcell and at least a portion of which can be reflected back into the third solar subcell by the DBR layer, wherein the distributed Bragg reflector layer is composed of a plurality of alternating layers of lattice matched materials with discontinuities in their respective indices of refraction, wherein the difference in refractive indices between alternating layers is maximized in order to minimize the number of periods required to achieve a given reflectivity, and the thickness and refractive index of each period determines the stop band and its limiting wavelength, and wherein the DBR layer includes a first DBR layer composed of a plurality of p type In z Al x Ga 1-x-z As layers, and a second DBR layer disposed over the first DBR layer and composed of a plurality of p type In w Al y Ga 1-y-w As layers, where 0<w<1, 0<x<1, 0<y<1, 0<z<1 and y is greater than x; and an intermediate layer disposed between the DBR layer and the fourth solar subcell, wherein the intermediate layer is compositionally step-graded to lattice match the DBR layer on one side and the fourth solar subcell on the other side, and is composed of any of the As, P, N, Sb based III-V compound semiconductors subject to the constraints of having the in-plane lattice parameter greater than or equal to that of the DBR layer and less than or equal to that of the lower fourth solar subcell, and having a band gap energy greater than that of the fourth solar subcell.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 90.0
- Lexical Diversity: 1.41176
- Patent Class: 136.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15249185', '15681144', '15909228', '15250643', '15249204']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8457276019044697
- 35 USC 102 Novelty (BERT): 0.5670647171169436
- Combined Prediction Score: 0.8178613134257172
- Mean Citation Score: 448.74153
- Max Citation Score: 455.74814
- Similarity Product: 421.14524854300737

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