Encapsulation of lead halide perovskite quantum dots in mesoporous NaYF4 matrices with enhanced stability for anti-counterfeiting

Che, Hailin1,2; Dang, Peipei2,3; Wei, Yi4; Cheng, Ziyong2,3; Lin, Jun1,2,3

2021-06-01

10.1039/d1dt01444g

DALTON TRANSACTIONS   影响因子和分区

1477-9226

1477-9234

All-inorganic cesium lead halide (CsPbX3, X = Cl, Br, and I) perovskite quantum dots (PQDs) have great potential application due to their unique optoelectronic properties. However, poor luminescence stability caused by some inevitable factors such as light, moisture and heat always restricts their practical application. In this work, the stability of CsPbX3 (X = Cl0.5Br0.5, Br, and Br0.5I0.5) PQDs is improved by encapsulating them in stable hollow mesoporous NaYF4:Yb,Tm nanoparticles (HMNPs). Compared to pristine PQDs, HMNP-PQD composites exhibit stable photoluminescence properties that can be maintained for more than 60 days under ambient atmospheric conditions. Thanks to the protection of HMNPs, the composites show much higher long-term stability in highly humid air and enhanced stability against UV light treatment compared to naked CsPbBr3 PQDs. Based on the proposed confinement effects of PQDs coordinated with the hollow mesoporous structure of NaYF4:Yb/Tm, the related structural model of NaYF4:Yb/Tm@PQD composites is discussed. Moreover, dual-mode luminescence can be observed in the NaYF4:Yb/Tm@PQD nanocomposites under 365 nm UV light and 980 nm laser excitation, indicating that the as-designed composites have great potential for dual-mode anti-counterfeiting application. This work provides a new idea for the stabilization and application of CsPbX3 PQDs.

SCI ; EI

英语

其他

NSFC[51932009,51772288,"U2005212"] ; Science and Technology Cooperation Project between Chinese and Australian Governments[2017YFE0132300] ; Major Program of Basic Research and Applied Research of Guangdong Province[2017KZDXM083]

Chemistry

Chemistry, Inorganic & Nuclear

WOS:000673047900001

ROYAL SOC CHEMISTRY

20213110704983

Bromine compounds ; Cesium compounds ; Chlorine compounds ; Composite structures ; Laser excitation ; Lead compounds ; Light ; Luminescence ; Mesoporous materials ; Nanocrystals ; Perovskite ; Semiconductor quantum dots ; Stability ; Thulium alloys ; Ultraviolet lasers ; Ytterbium alloys

Structural Members and Shapes:408.2 ; Minerals:482.2 ; Rare Earth Metals:547.2 ; Alkali Metals:549.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Lasers, General:744.1 ; Laser Applications:744.9 ; Nanotechnology:761

CHEMISTRY

Web of Science

1.Wuyi Univ, Sch Appl Phys & Mat, Jiangmen 529020, Guangdong, Peoples R China
2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
4.Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Peoples R China

Che, Hailin,Dang, Peipei,Wei, Yi,et al. Encapsulation of lead halide perovskite quantum dots in mesoporous NaYF4 matrices with enhanced stability for anti-counterfeiting[J]. DALTON TRANSACTIONS,2021,50:10299-10309.

Che, Hailin,Dang, Peipei,Wei, Yi,Cheng, Ziyong,&Lin, Jun.(2021).Encapsulation of lead halide perovskite quantum dots in mesoporous NaYF4 matrices with enhanced stability for anti-counterfeiting.DALTON TRANSACTIONS,50,10299-10309.

Che, Hailin,et al."Encapsulation of lead halide perovskite quantum dots in mesoporous NaYF4 matrices with enhanced stability for anti-counterfeiting".DALTON TRANSACTIONS 50(2021):10299-10309.