First-principles insights into lead-free K2AgRhX6 (X = F, Cl, Br, I) halide double perovskites as stable platforms for next-generation optoelectronic and energy conversion devices

Key Points

• K2AgRhX6 double perovskites demonstrate exceptional stability for optoelectronic applications, paving future paths.
• First-principles insights highlight favorable properties of K2AgRhX6 as a lead-free alternative for devices.
• Evaluation includes halides F, Cl, Br, and I, showcasing their role in stability and performance assessments.
• Findings may progress the development of energy conversion devices, underscoring environmental advantages.