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Newly Developed Broadband Antireflective Nanostructures by Coating a Low-Index MgF 2 Film onto a SiO 2 Moth-Eye Nanopattern.
- Source :
-
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2020 Mar 04; Vol. 12 (9), pp. 10626-10636. Date of Electronic Publication: 2020 Feb 19. - Publication Year :
- 2020
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Abstract
- A newly developed nanopatterned broadband antireflective (AR) coating was fabricated on the front side of a glass/indium tin oxide/perovskite solar cell (PSC) by depositing a single interference layer onto a two-dimensional (2D)-patterned moth-eye-like nanostructure. The optimized developed AR nanostructure was simulated in a finite-difference time domain analysis. To realize the simulated developed AR nanostructure, we controlled the SiO <subscript>2</subscript> moth-eye structure with various diameters and heights and a MgF <subscript>2</subscript> single layer with varying thicknesses by sequentially performing nanosphere lithography, reactive ion etching, and electron-beam evaporation. Optimization of the developed AR nanostructure, which has a 100 nm-thick MgF <subscript>2</subscript> film coated onto the SiO <subscript>2</subscript> moth-eye-like nanostructure (diameter 165 nm and height 400 nm), minimizes the reflection loss throughout the visible range. As a result, the short-circuit current density ( J <subscript>SC</subscript> ) of the newly AR-coated PSC increases by 11.80%, while the open-circuit voltage ( V <subscript>OC</subscript> ) remains nearly constant. Therefore, the power conversion efficiency of the newly developed AR-decorated PSC increases by 12.50%, from 18.21% for a control sample to 20.48% for the optimum AR-coated sample. These results indicate that the newly developed MgF <subscript>2</subscript> /SiO <subscript>2</subscript> AR nanostructure can provide an advanced platform technology that reduces the Fresnel loss and therefore increases the possibility of the commercialization of glass-based PSCs.
Details
- Language :
- English
- ISSN :
- 1944-8252
- Volume :
- 12
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- ACS applied materials & interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 32030970
- Full Text :
- https://doi.org/10.1021/acsami.9b19871