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Title: Metallic dielectric photonic crystals and methods of fabrication

A metallic-dielectric photonic crystal is formed with a periodic structure defining a plurality of resonant cavities to selectively absorb incident radiation. A metal layer is deposited on the inner surfaces of the resonant cavities and a dielectric material fills inside the resonant cavities. This photonic crystal can be used to selectively absorb broadband solar radiation and then reemit absorbed radiation in a wavelength band that matches the absorption band of a photovoltaic cell. The photonic crystal can be fabricated by patterning a sacrificial layer with a plurality of holes, into which is deposited a supporting material. Removing the rest of the sacrificial layer creates a supporting structure, on which a layer of metal is deposited to define resonant cavities. A dielectric material then fills the cavities to form the photonic crystal.
Inventors:
;
Issue Date:
OSTI Identifier:
1411388
Assignee:
Massachusetts Institute of Technology (Cambridge, MA) EFRC
Patent Number(s):
9,837,953
Application Number:
15/343,030
Contract Number:
SC0001299; FG02-09ER46577
Resource Relation:
Patent File Date: 2016 Nov 03
Research Org:
Massachusetts Institute of Technology, Cambridge, MA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE