Imidazole additives in 2D halide perovskites: impacts of –CN <i>versus</i> –CH<sub>3</sub> substituents reveal the mediation of crystal growth by phase buffering
Shuang Yu, Jie Meng, Qinying Pan, Qian Zhao, Tõnu Pullerits, Yingguo Yang, Kaibo Zheng, Ziqi Liang
Abstract
A cyano-based DCI additive induces phase-buffering during the crystallization growth process of 2D halide perovskites, which effectively suppresses interphase strain, enhances lattice orientation and reduces trap-state density, delivering an outstanding and stable efficiency of ∼17.0% ( n = 4).
Topics & Concepts
HalideImidazoleMediationChemistryCrystal (programming language)Phase (matter)CrystallographyStereochemistryInorganic chemistryOrganic chemistryComputer sciencePolitical scienceProgramming languageLawPerovskite Materials and ApplicationsQuantum Dots Synthesis And Properties2D Materials and Applications