Bifacial Perovskite Solar Cells Featuring Semitransparent Electrodes

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Inorganic-organic hybrid perovskite solar cells (PSCs) offer a low-cost, high-efficiency alternative to silicon solar cells.
• Bifacial PSCs are being explored for enhanced light absorption from both sides.

Purpose of the Study:

• To fabricate and characterize bifacial PSCs with novel transparent rear electrodes.
• To investigate the impact of bifacial illumination and mirror reflectors on device performance.

Main Methods:

• Fabrication of bifacial PSCs using low-temperature thermal evaporation for transparent BCP/Ag/MoO3 rear electrodes.
• Utilized optical distribution programs to analyze optical field intensity.
• Tested device performance under single-sided and bifacial illumination.

Main Results:

• The best PSC with a transparent BCP/Ag/MoO3 electrode achieved power conversion efficiencies (PCEs) of 13.49% (front) and 9.61% (rear).
• Significant power enhancement was observed with mirror reflectors and bifacial light illumination.
• Demonstrated the effectiveness of low-temperature processed transparent electrodes.

Conclusions:

• Bifacial PSCs with transparent BCP/Ag/MoO3 electrodes are a viable technology for efficient clean energy generation.
• Low-temperature processing enables cost-effective fabrication.
• Bifacial design and optical enhancements significantly boost solar cell performance.