Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 9, Pages 10626-10636Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b19871
Keywords
antireflection; moth eye; single-layer interference; MgF2; finite-difference time domain
Funding
- Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20163010012570]
- National Research Foundation of Korea (NRF) - Korea government [MSIP (Ministry of Science, ICT, and Future Planning)] [2016R1A5A1012966]
- National Research Foundation of Korea [22A20130012860] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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 SiO2 moth-eye structure with various diameters and heights and a MgF2 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 MgF2 film coated onto the SiO2 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(SC)) of the newly AR-coated PSC increases by 11.80%, while the open-circuit voltage (V-OC) 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 MgF2/SiO2 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.
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