Phosphor-aluminosilicate CsPbX_(3) perovskite fluorescent glass with low formation temperature for photoluminescence display applications  

作　　者：Bin Liu Jinkai Li Bingqiang Cao Lei Zhang Zongming Liu 

机构地区：[1]School of Materials Science and Engineering,University of Jinan,Jinan 250022,China [2]Infovision Optoelectronics(Kunshan)Co.,Ltd.,Kunshan 215333,China [3]Centre for Catalysis and Clean Energy,Griffith University,Gold Coast Campus,Queensland 4222,Australia

出　　处：《ChemPhysMater》2023年第4期323-330,共8页化学物理材料（英文）

基　　金：This work was supported in part by the China Postdoctoral Science Foundation(No.2022M711438)'the Natural Science Foundation of Shandong Province(ZR2020ME045 and ZR2020ME046)'the“New Universities 20”Foundation of Jinan(Grant No.2021GXRC099).

摘　　要：All-inorganic perovskites are rapidly emerging as novel optoelectronic functional materials owing to their flu-orescence properties.However,the stability of these materials has always been the biggest challenge for their applications in photoelectric devices.Therefore,this study focuses on developing phosphor-aluminosilicate-based CsPbX_(3)(X=Cl,Br,and I)glass with a low reaction temperature by adding CsCO_(3),PbX_(2),and NaX to the raw materials in order to improve the stabilities.The glass network intermediates of SiO_(2) and Al_(2)O_(3) doping in the raw material enhanced the stability of the pure phosphate glass network structure and devitrification while decreas-ing the melting temperature.Full chromatographic CsPbX 3 quantum dots(QDs)encapsulated in phosphate-based glass were found to increase the fluorescence properties and quantum efficiency(>59%).Notably,the high water stability of CsPbX_(3) QDs glasses,with the maintenance of 90% luminous intensity,emerged when soaked in water.In addition,the excellent thermal stability and anti-ion exchange properties of the CsPbX_(3) QDs glasses were re-vealed.Benefiting from the above,multicolor light-emitting diode(LED)devices were assembled with a mixture of phosphors of CsPbX_(3) QDs glasses and commercial red-emission K 2 SiF 6:Mn 4+phosphor spread on an InGaN chip,demonstrating bright light with superior luminous properties.Phosphor-aluminosilicate-based CsPbX_(3) QDs glass with high stability and low formation temperature would provide new methods for applications in lighting and displays.

关 键 词：Phosphor-aluminosilicate CsPbX_(3)glass High stability Multicolor LED devices 

分 类 号：O64[理学—物理化学]