Photovoltaic cell with light trapping for enhanced efficiency
Patent
·
OSTI ID:1226233
The efficiency of a photovoltaic cell is enhanced by light trapping using Mie-scattering nanostructures. In one embodiment, an array of nanocylinders is formed on the front surface of a silicon film to enhance forward scattering into the film, and an array of nanocylinders is formed on the back surface to enhance backscattering so that more light is absorbed within the silicon film. In an alternate embodiment, a mirror layer is formed on the back surface of the silicon film to reflect light within the film back toward the front-surface nanocylinder array.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- Assignee:
- Sandia Corporation
- Patent Number(s):
- 9,190,542
- Application Number:
- 14/555,438
- OSTI ID:
- 1226233
- Resource Relation:
- Patent File Date: 2014 Nov 26
- Country of Publication:
- United States
- Language:
- English
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