An amino-phthalocyanine additive enhances the efficiency of perovskite solar cells through defect passivation in mixed-halide films
Journal
Organic Electronics
Journal Volume
108
Date Issued
2022
Author(s)
Abstract
Although perovskite solar cells (PSCs) can be easy to process and display exceptional optoelectronic properties, the presence of defects and poor control over crystallization can adversely affect their efficiency and long-term stability. In this study, we employed iron(II)-2,9,16,23-tetraamino-phthalocyanine (FeTAP) as a small-molecule additive capable of defect passivation in a mixed-halide perovskite (MHP). In particular, we used an additive engineering treatment protocol to introduce FeTAP into the MHP layer to significantly suppress perovskite defects, improve charge extraction, and inhibit perovskite degradation. A PSC incorporating a FeTAP-modified perovskite layer exhibited a power conversion efficiency (PCE) of 18.81% and retained 72.5% of its initial PCE after storage for 30 days. Thus, adding FeTAP to the MHP film significantly enhanced the efficiency and stability of the resulting PSC. © 2022 Elsevier B.V.
Subjects
Additives; Mixed-halide perovskite solar cells; Small molecule
SDGs
Other Subjects
Additives; Defects; Efficiency; Iron compounds; Molecules; Passivation; Perovskite; Defect passivation; Engineering treatment; Halide films; Halide perovskites; Long term stability; Mixed-halide perovskite solar cell; Optoelectronics property; Perovskite layers; Power conversion efficiencies; Small molecules; Perovskite solar cells
Type
journal article