Inorganic antimony halide hybrids with broad yellow emissions

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（13）
• 页码范围: 904-909
• 页数: 6页
• 语种: 英文

摘要

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).