A highly efficient and stable green-emitting mesoporous silica (MP)–(Cs0.4Rb0.6)PbBr3 perovskite composite for application in optoelectronic devices†,10.1039/C7NJ03161K

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A highly efficient and stable green-emitting mesoporous silica (MP)–(Cs0.4Rb0.6)PbBr3 perovskite composite for application in optoelectronic devices†

Young Hyun Song,Seung Hee Choi,Won Kyu Park,Jin Sun Yoo,Bong Kyun Kang,Seok Bin Kwon,Hyun Suk Jung,Woo Seok Yang,Dae Ho Yoon

New Journal of Chemistry Pub Date : 10/27/2017 00:00:00 , DOI:10.1039/C7NJ03161K

Abstract

We have, for the first time, reported a highly efficient MP–(Cs_0.4Rb_0.6)PbBr₃ luminescent material for application in optoelectronic devices. MP–(Cs_0.4Rb_0.6)PbBr₃ with red-emitting Sr₂Si₅N₈:Eu²⁺ phosphor is applied to an InGaN blue chip and compared with green-emitting (Cs_0.4Rb_0.6)PbBr₃ perovskite nanocrystals (NCs). MP–(Cs_0.4Rb_0.6)PbBr₃ achieves a conversion efficiency of 80.9 lm W⁻¹ under a forward-bias current of 150 mA. We propose MP–(Cs_0.4Rb_0.6)PbBr₃ as a promising green-emitting material that can replace the conventional inorganic phosphor.