Advantages and challenges of self-assembled monolayer as a hole-selective contact for perovskite solar cells. (8th March 2023)

• Record Type: Journal Article
• Authors: Wang, Songran; Guo, Huanxin; Wu, Yongzhen
• Is Part Of: Materials futures. Volume 2:Number 1(2023)
• Publication Date: 2023-03-08
• Subjects: hole-selective contact -- self-assembled monolayer -- conformal coating -- covalent bonding -- perovskite solar cells; Materials science -- Periodicals; Materials science -- Research -- Periodicals; 620.11
• DOI: 10.1088/2752-5724/acbb5a
• Languages: English
• ISSNs: 2752-5724

Abstract

Abstract: Charge-transporting layers (CTLs) are important in determining the performance and stability of perovskite solar cells (PSCs). Recently, there has been considerable use of self-assembled monolayers (SAMs) as charge-selective contacts, especially for hole-selective SAMs in inverted PSCs as well as perovskite involving tandem solar cells. The SAM-based charge-selective contact shows many advantages over traditional thin-film organic/inorganic CTLs, including reduced cost, low optical and electric loss, conformal coating on a rough substrate, simple deposition on a large-area substrate and easy modulation of energy levels, molecular dipoles and surface properties. The incorporation of various hole-selective SAMs has resulted in high-efficiency single junction and tandem solar cells. This topical review summarizes both the advantages and challenges of SAM-based charge-selective contacts, and discusses the potential direction for future studies.