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Non-Mechanically Moving Solar Directing System for Photovoltaic Modules

Award Information

Department of Defense
Award ID:
Program Year/Program:
2013 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Phoebus Optoelectronics LLC
12 Desbrosses Street New York, NY 10013-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2013
Title: Non-Mechanically Moving Solar Directing System for Photovoltaic Modules
Agency: DOD
Contract: N39430-13-P-1249
Award Amount: $149,804.00


We propose a two-layer anti-reflective coating (ARC) that will have omni-directional properties. This coating will guide the light that is incident from oblique angles and orient it to become perpendicular to the solar cell surface. The top-most part of the coating will have a graded index of refraction, starting from an index of 1 at the air interface and gradually increasing to an index of about 1.5 at the interface between the two coating layers. This top layer will be made out of cheap polymer that can be deposited by dip-coating, and the graded index will be achieved by texturing the polymer to have up-right pyramids. As the light travels through this layer, it will bend to become perpendicular to the surface of constant index regardless of initial angle of incidence. The bottom layer of our proposed coating will consist of a standard silicon nitride (SiN) thin film layer that will act as an interference ARC between the polymer and the silicon surface of the solar cell to minimize reflections between each layer. We believe this approach offers cost and weight advantages over not only current mechanical solar directing systems, but also other similar graded ARCs based on silicon oxide.

Principal Investigator:

Roman Akmechet
Chief Technology Officer
(917) 703-4647

Business Contact:

Nicole Avallone
Chief Operating Officer
(718) 484-7033
Small Business Information at Submission:

Phoebus Optoelectronics LLC
419 Lafayette Street New York, NY -

EIN/Tax ID: 562451605
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No