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Enhanced Light Harvesting in Perovskite Solar Cells by a Bioinspired Nanostructured Back Electrode.
- Source :
- Advanced Energy Materials; 10/25/2017, Vol. 7 Issue 20, pn/a-N.PAG, 7p
- Publication Year :
- 2017
-
Abstract
- Light management holds great promise of realizing high-performance perovskite solar cells by improving the sunlight absorption with lower recombination current and thus higher power conversion efficiency (PCE). Here, a convenient and scalable light trapping scheme is demonstrated by incorporating bioinspired moth-eye nanostructures into the metal back electrode via soft imprinting technique to enhance the light harvesting in organic-inorganic lead halide perovskite solar cells. Compared to the flat reference cell with a methylammonium lead halide perovskite (CH<subscript>3</subscript>NH<subscript>3</subscript>PbI<subscript>3−</subscript> <subscript>x</subscript>Cl <subscript>x</subscript>) absorber, 14.3% of short-circuit current improvement is achieved for the patterned devices with moth-eye nanostructures, yielding an increased PCE up to 16.31% without sacrificing the open-circuit voltage and fill factor. The experimental and theoretical characterizations verify that the cell performance enhancement is mainly ascribed by the broadband polarization-insensitive light scattering and surface plasmonic effects due to the patterned metal back electrode. It is noteworthy that this light trapping strategy is fully compatible with solution-processed perovskite solar cells and opens up many opportunities toward the future photovoltaic applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- ENERGY harvesting
PEROVSKITE
SOLAR cells
NANOSTRUCTURED materials
ENERGY conversion
Subjects
Details
- Language :
- English
- ISSN :
- 16146832
- Volume :
- 7
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- Advanced Energy Materials
- Publication Type :
- Academic Journal
- Accession number :
- 125875564
- Full Text :
- https://doi.org/10.1002/aenm.201700492