Role of Inorganic Cations in the Excitonic Properties of Lead Halide Perovskites

Małgorzata Wierzbowska, Juan J. Meléndez

We theoretically investigate lead iodide perovskites of general formula APbI${}_3$ for a series of metallic cations (namely Cs${}^{+}$, Rb${}^{+}$, K${}^{+}$, Na${}^{+}$ and Li${}^{+}$) by means of the…