Halide segregation in mixed-halide perovskites: influence of a-site cations

Mixed-halide perovskites offer bandgap tunability essential for multijunction solar cells; however, a detrimental halide segregation under light is often observed. Here we combine simultaneous in situ photoluminescence and X-ray diffraction measurements to demonstrate clear differences in compositio...

Full description

Bibliographic Details
Main Authors: Knight, AJ, Borchert, J, Oliver, RDJ, Patel, JB, Radaelli, PG, Snaith, HJ, Johnston, MB, Herz, LM
Format: Journal article
Language:English
Published: American Chemical Society 2021