Analysis of the Physical, Structural, and Optical Characteristics of ACdF3 (A = Cu, Li, and Fr) Metal Halide Perovskites: A DFT Investigation. - Barua, Acme; Fatema-Tuz-Zahra; Ovi, Istiak Ahmed; Islam, Md. Rasidul; Godavarthi, Srinivas (Advances in Condensed Matter Physics, 2026)