Solar power conversion: CuI hole transport layer and Ba₃NCl₃ absorber enable advanced solar cell technology boosting...

Area of Science:

• Materials Science
• Solid-State Physics
• Renewable Energy

Background:

• Barium-nitride-chloride (Ba3NCl3) hybrid perovskite solar cells (HPSCs) are gaining attention for their unique semiconductor characteristics.
• Titanium dioxide (TiO2) electron transport layers (ETLs) and copper iodide (CuI) hole transport layers (HTLs) are key components in Ba3NCl3-based photovoltaic devices.

Purpose of the Study:

• To investigate the performance of Ba3NCl3-based single-junction solar cells with varying ETL and HTL configurations.
• To optimize device parameters for enhanced power conversion efficiency (PCE) using numerical simulations.

Main Methods:

• Extensive numerical analysis was performed using SCAPS-1D simulation software.
• Key parameters investigated include layer thickness, defect densities, doping concentrations, and interface properties.
• Performance metrics such as open-circuit voltage (VOC), short-circuit current (JSC), fill factor (FF), and PCE were analyzed.

Main Results:

• The configuration utilizing a CuI HTL demonstrated the highest PCE, reaching 30.47%.
• This optimal design achieved a VOC of 1.0649 V, a JSC of 38.2609 mA cm-2, and an FF of 74.78%.
• The study systematically explored the impact of various parameters on device performance.

Conclusions:

• The findings provide valuable data for the development of efficient Ba3NCl3-based thin-film solar cells.
• A practical roadmap for fabricating cost-effective and high-performance solar cells using Ba3NCl3 is proposed.
• Optimization of HTL design is crucial for maximizing the PCE of these novel solar cells.