Emerging Trends in Electron Transport Layer Development for Stable and Efficient Perovskite Solar Cells

This study provides guidelines for the use of efficient ETMs in PSCs, describes the remarkable progress of ETMs in various perovskite systems, and focuses on the key ETL challenges: regulating grain structure, defect passivation techniques, energy level alignment, and interface engineering. It finishes with a detailed assessment of the most advanced ETMs, focusing on their strategic importance and future challenges. AbstractPerovskite solar cells (PSCs) stand at the forefront of photovoltaic research, with current efficiencies surpassing 26.1%. This review critically examines the role of electron transport materials (ETMs) in enhancing the performance and longevity of PSCs. It presents an integrated overview of recent advancements in ETMs, like TiO2, ZnO, SnO2, fullerenes, non-fullerene polymers, and small molecules. Critical challenges are regulated grain structure, defect passivation techniques, energy level alignment, and interfacial engineering. Furthermore, the review highlights innovative materials that promise to redefine charge transport in PSCs. A detailed comparison of state-of-the-art ETMs elucidates their effectiveness in different perovskite systems. This review endeavors to inform the strategic enhancement and development of n-type electron transport layers (ETLs), delineating a pathway toward the realization of PSCs with superior efficiency and stability for potential commercial deployment.

Source: Small - April 4, 2024 Category: Nanotechnology Authors: Lele Zang, Chunhu Zhao, Xiaobo Hu, Jiahua Tao, Shaoqiang Chen, Junhao Chu Tags: Review Source Type: research