Absorption enhancement in ultrathin crystalline silicon solar cells with antireflection and light-trapping nanocone gratings.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 22356436.
- Also identified by DOI 10.1021/nl204550q.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Enhancing the light absorption in ultrathin-film silicon solar cells is important for improving efficiency and reducing cost. We introduce a double-sided grating design, where the front and back surfaces of the cell are separately optimized for antireflection and light trapping, respectively. The optimized structure yields a photocurrent of 34.6 mA/cm(2) at an equivalent thickness of 2 μm, close to the Yablonovitch limit. This approach is applicable to various thicknesses and is robust against metallic loss in the back reflector.
Medical subject headings
- Electric Power Supplies
- Lenses
- Nanostructures
- Refractometry
- Silicon
- Solar Energy