Metal Oxide Compact Electron Transport Layer Modification for Efficient and Stable Perovskite Solar Cells

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Perovskite solar cells (PSCs) offer promising cost-efficient fabrication and excellent optoelectronic properties for next-generation photovoltaics.
• However, PSCs with metal oxide compact layers (CLs) exhibit poor long-term stability and performance.
• Substrate quality critically impacts perovskite layer growth, directly influencing PSC efficiency and stability.

Purpose of the Study:

• To review metal oxide-based electron transport layers (ETLs) in PSCs and their modifications.
• To discuss the role of ETLs in designing and fabricating efficient and stable PSCs.
• To guide future development of perovskite films for improved PSC performance and sustainability.

Main Methods:

• Systematic review of metal oxide-based ETLs in perovskite solar cells.
• Analysis of substrate modification strategies using metal oxide CLs.
• Discussion of perovskite film quality factors (grain size, crystallinity, morphology) and their impact on PSCs.

Main Results:

• Metal oxide ETLs are key to enhancing PSC efficiency and stability.
• Substrate modification with CLs can lead to highly efficient and stable PSCs.
• Optimized perovskite film characteristics (larger grains, higher crystallinity, homogeneous morphology) correlate with improved PSC performance.

Conclusions:

• Modifying metal oxide ETLs is essential for advancing PSC technology.
• Further research into compact ETLs is needed to overcome current challenges.
• Improvements in PSCs aim to boost sustainable clean energy production.