Revisiting a (001)-oriented layered lead chloride templated by 1,2,4-triazolium: structural phase transitions, lattice dynamics and broadband photoluminescence

Abstract

Layered 1,2,4-triazolium lead chloride undergoes three phase transitions. It also exhibits narrow and broad emissions, which exhibit different temperature dependence. We correlated this behaviour with the change of the octahedral distortion.