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Gram-Scale Synthesis of Blue-Emitting CH3NH3PbBr3 Quantum Dots Through Phase Transfer Strategy.


ABSTRACT: Reprecipitation synthesis has been demonstrated to be a simple and convenient route to fabricate high quality perovskite quantum dots toward display applications, whereas the limited chemical yields (< 10%) and difficulty of purification limited its further application. In order to overcome this issue, we here report a modified emulsion synthesis by introducing phase transfer strategy, which achieving effective extraction of newly formed perovskite quantum dots into non-polar solvent and avoiding the degradation of perovskite quantum dots to a large extent. Based on this strategy, gram-scale CH3NH3PbBr3 quantum dots were fabricated in 10 mL (~0.02 mol/L) colloidal solution with chemical yields larger than 70%. The as fabricated CH3NH3PbBr3 quantum dots exhibit an emission peak of 453 nm and a full width at half maximum of only 14 nm. Moreover, electroluminescent devices based on blue emitting CH3NH3PbBr3 quantum dots were also explored with a maximum luminance of 32 cd/m2, showing potential applications in blue light emitting devices.

SUBMITTER: Zhang F 

PROVIDER: S-EPMC6169035 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Gram-Scale Synthesis of Blue-Emitting CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Quantum Dots Through Phase Transfer Strategy.

Zhang Feng F   Xiao Changtao C   Li Yunfei Y   Zhang Xin X   Tang Jialun J   Chang Shuai S   Pei Qibing Q   Zhong Haizheng H  

Frontiers in chemistry 20180926


Reprecipitation synthesis has been demonstrated to be a simple and convenient route to fabricate high quality perovskite quantum dots toward display applications, whereas the limited chemical yields (< 10%) and difficulty of purification limited its further application. In order to overcome this issue, we here report a modified emulsion synthesis by introducing phase transfer strategy, which achieving effective extraction of newly formed perovskite quantum dots into non-polar solvent and avoidin  ...[more]

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