Selective Spin Dewetting for Perovskite Solar Modules Fabricated on Engineered Au/ITO Substrates.

Area of Science:

• Materials Science
• Renewable Energy
• Nanotechnology

Background:

• Perovskite solar cells offer high efficiency but module fabrication remains challenging.
• Conventional interconnection methods like laser scribing can impact device performance.
• Developing scalable and efficient module fabrication techniques is crucial for commercialization.

Purpose of the Study:

• To introduce a novel selective spin-coating method for perovskite solar module fabrication.
• To engineer Au/ITO patterned substrates for enhanced monolayer selectivity and seamless cell interconnection.
• To demonstrate a viable alternative to laser scribing for perovskite solar module production.

Main Methods:

• Fabrication of perovskite solar modules using selective spin-coating on Au/ITO patterned substrates.
• Engineering of Au/ITO patterns for selective self-assembly of monolayers on Au electrodes.
• Utilizing self-assembled monolayers (SAMs) for sequential deposition of electron transport layers (ETLs) and perovskite layers on ITO, and hole transport layers (HTLs) on Au electrodes.
• Characterization of specific contact resistivity to assess impact on series resistance.

Main Results:

• Achieved selective deposition of ETL and perovskite layers on ITO, and HTL on Au connection electrodes.
• Demonstrated negligible impact on series resistance due to the fabrication method.
• Successfully produced a six-cell series-connected perovskite solar module.
• Attained an average power conversion efficiency (PCE) of 8.32% for the fabricated module.

Conclusions:

• The novel selective spin-coating method is a viable technique for fabricating perovskite solar modules.
• This approach facilitates efficient cell interconnection and maintains device performance.
• The developed method offers a promising alternative to conventional laser scribing for scalable perovskite solar module production.