Fig. 1: The design of full-spectrum white light.
From: Nanoscale heterophase regulation enables sunlight-like full-spectrum white electroluminescence
a Schematic spectrum of sunlight, commercial WLED and ideal WLED. b Crystal structure and optical performance of the different CsPbI3 phases. c Material design for full-spectrum white light. d The total energy differences at 0 K (red) and the Helmholtz free energy differences at 300 K (turquoise) between the γ and δ phases in the form of ∆E(T) = Eγ(T) − Eδ(T), as a function of the Cl− concentration. e Schematic diagrams of the relative thermodynamic stability between the γ and δ phases for pure CsPbI3 and CsPb(I/Cl)3 systems, respectively.
