Design of long-term stable red-emitting CsPb(Br0.4, I0.6)3 perovskite quantum dot film for generation of warm white light

Abstract

To our best knowledge, we report the first long-term stable highly efficient CsPb(Br0.4, I0.6)3 perovskite QDs with ethyl cellulose for warm white light generation in optoelectronic devices. Compared with conventional inorganic YAG: Ce and red phosphor, CsPb(Br0.4, I0.6)3 perovskite QDs are inexpensive with outstanding characteristics of narrow FWHM of 32nm, high luminous efficacy of 46.45lm/W and CRI of 90.3. We propose the CsPb(Br0.4, I0.6)3 perovskite QDs with ethyl cellulose as a promising red-emitting material and a color converter which can replace the conventional inorganic phosphor.