ArticleInorganic antimony halide hybrids with broad yellow emissions

Add time:08/16/2019    Source:sciencedirect.com

Lead halide perovskites exhibit unexceptionable photoelectric properties. However, these materials are unsatisfactory in terms of stability and toxicity. Herein, we report Rb7Sb3Cl16 as a new kind of lead free perovskite variants. This material can be easily obtained through hydrothermal reactions. The composition is determined through structure refinement, elemental analysis and X-ray photoelectron spectra. Rb7Sb3Cl16 exhibits a broad yellow emission at 560 nm, with a Stokes shift of 175 nm and a photoluminescence quantum yield (PLQY) around 26%. Rb7Sb3Cl16 also shows good thermal and water stability due to its inorganic composition. White light-emitting diodes (LEDs) are constructed by combining Rb7Sb3Cl16 as yellow phosphors, our previously reported Cs2SnCl6:2.75%Bi as blue phosphors, and commercial UV LED chips as the excitation source, producing a white light with the Commission Internationale de’Eclairage (CIE) color coordinates at (0.39, 0.38).

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