Extended Data Fig. 2: Emission characterization of pure Cs2AgInCl6.
From: Efficient and stable emission of warm-white light from lead-free halide double perovskites
a, The broad photoluminescence (PL) spectrum of Cs2AgInCl6 measured at room temperature. b, Temperature-dependent photoluminescence spectra of pure Cs2AgInCl6. c, Fitting results of the FWHM as a function of temperature. We note that we used a relatively low-temperature region to avoid the influence of defect-assisted emission. d, The PLQY of Cs2AgInCl6. The reference was measured in an integrating sphere with a blank quartz plate.
