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Methods to introduce sub-micrometer, symmetry-breaking surface corrugation to silicon substrates to increase light trapping

Patent ·
OSTI ID:1433847
Provided is a method for fabricating a nanopatterned surface. The method includes forming a mask on a substrate, patterning the substrate to include a plurality of symmetry-breaking surface corrugations, and removing the mask. The mask includes a pattern defined by mask material portions that cover first surface portions of the substrate and a plurality of mask space portions that expose second surface portions of the substrate, wherein the plurality of mask space portions are arranged in a lattice arrangement having a row and column, and the row is not oriented parallel to a [110] direction of the substrate. The patterning the substrate includes anisotropically removing portions of the substrate exposed by the plurality of spaces.
Research Organization:
STC.UNM, Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
Assignee:
STC.UNM (Albuquerque, NM)
Patent Number(s):
9,941,426
Application Number:
15/389,936; CHE-1231046
OSTI ID:
1433847
Country of Publication:
United States
Language:
English

References (1)

Complex Chiral Colloids and Surfaces via High-Index Off-Cut Silicon journal April 2014