D–A–π–A organic sensitizer surface passivation for efficient and stable perovskite solar cells

Abstract

Organic-inorganic hybrid lead perovskite films are crucial in the perovskite solar cells (PSCs). However, the solution deposition process caused the polycrystalline feature of perovskite films with a large number of...

The evolution of triphenylamine hole transport materials for efficient perovskite solar cells

“…93 To date, the addition of various types of passivation materials (also known as passivators) to perovskite films has led to the induction of defect passivation through coordination with under-coordinated metal cations or halide anions. 93,94 Lewis acids or bases, as a group of passivator substances, are reported to have special effects on certain defects. 94 For example, the Lewis acid phenyl-C 61 -butyric acid methyl ester (PCBM) eliminates notorious photocurrent hysteresis by passivating trap states through coordination with halide ions.…”

“…93,94 Lewis acids or bases, as a group of passivator substances, are reported to have special effects on certain defects. 94 For example, the Lewis acid phenyl-C 61 -butyric acid methyl ester (PCBM) eliminates notorious photocurrent hysteresis by passivating trap states through coordination with halide ions. 93 Atoms with lone pairs of electrons, especially nitrogen, oxygen, and sulfur atoms, act as Lewis bases and electron donors.…”

Ionic Liquid‐Assisted Crystallization and Defect Passivation for Efficient Perovskite Solar Cells with Enhanced Open‐Circuit Voltage

“…[33][34][35][36][37] For example, Guo et al used molecule MM-4 with high coplanar πbridges as an additive, and the grain boundaries were reduced, resulting in the facilitation of electron transfer and suppression of non-radiative recombination. [38] Lee et al employed a bifunctional nonvolatile Lewis base urea as an additive, which retarded the crystal growth and improved the crystallinity of perovskite, leading to the improvement of the perovskite film quality. [39] Li et al added NaF inorganic salt to the precursor solution for passivating the point defects, which effectively inhibited the dissociation of ions in perovskite crystals through the effects of hydrogen and ionic bonding, leading to increase of the film quality and stability.…”

“…For example, Guo et al. used molecule MM‐4 with high coplanar π‐bridges as an additive, and the grain boundaries were reduced, resulting in the facilitation of electron transfer and suppression of non‐radiative recombination [38] . Lee et al.…”

Thiophene Derivatives as Ligands for Highly Luminescent and Stable Manganese-Doped CsPbCl3 Nanocrystals

“…Nevertheless, the potential of more effective ligands, such as thiophene derivatives, remains rather unexplored. In this respect, recent literatures on high-performance perovskite solar cells (PSCs) using thiophene additives ( Wen et al, 2020 ; Chen et al, 2021 ; Choi et al, 2021 ; Guo et al, 2021 ; Ren et al, 2021 ) to passivate the defects of perovskite films are highly encouraging. Consequently, we envision that thiophene additives have the potential to be further applied as ligands in the synthesis process of all-inorganic perovskite NCs.…”