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Published on: April 25, 2018
Double-layered ZnO nanostructures for efficient perovskite solar cells
Khalid Mahmood1, Bhabani S Swain, Aram Amassian
1Physical Sciences and Engineering Division, and Solar and Photovoltaic Engineering Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia. khalid.mahmood@kaust.edu.sa.
Researchers developed a novel nanostructured double-layer zinc oxide (ZnO) film as an electron transport layer (ETL) for perovskite solar cells. This advancement significantly boosts power conversion efficiency, offering new avenues for solar energy development.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Single-layer titanium dioxide (TiO2) or zinc oxide (ZnO) are established electron transport layers (ETLs) in perovskite solar cells.
- Improving ETL performance is crucial for advancing solution-processed perovskite photovoltaics.
Purpose of the Study:
- To investigate a novel nanostructured double-layer ZnO film as an ETL in mesoscopic perovskite solar cells.
- To enhance electron transport and overall device efficiency.
Main Methods:
- Fabrication of a nanostructured double-layer ZnO film using low-temperature hydrothermal processing.
- Integration of the double-layer ZnO film as an ETL in mesoscopic perovskite solar cells.
- Performance characterization including power conversion efficiency (PCE) measurements.
Main Results:
- Achieved a maximum power conversion efficiency of 10.35%.
- Observed enhanced performance attributed to the specific morphology of the oxide layers.
- Demonstrated faster electron transport compared to single-layer ETLs.
Conclusions:
- The nanostructured double-layer ZnO film is a highly effective ETL for perovskite solar cells.
- Optimizing ETLs, particularly with novel nanostructures, presents significant opportunities for improving perovskite solar cell efficiencies.
- Low-temperature hydrothermal processing offers a viable route for scalable ETL fabrication.
