摘要
There are many strategies to maintain the excellent photoluminescence(PL) characteristics of perovskite quantum dots(QDs). Here, we proposed a facile and effective method to prepare cyan CsPb(Cl/Br)3/SiO2 nanospheres at room temperature. Cubic CsPb(Cl/Br)3 was obtained by adding a LiCl-H2O solution and anion exchange reaction. With(3-aminopropyl)triethoxysilane as an auxiliary agent, a QDs/SiO2 composite was extracted from a sol-gel solution by precipitate-encapsulation method. The transmission electron microscopy images and Fourier transform infrared spectra indicated the QDs were indeed embedded in silica substances.Besides, humidity stability and thermal stability show the composite possesses a great application value.Finally, cyan QDs@SiO2 powder has a high PL quantum yield of up to 84%;the stable cyan fluorescent powder does have great potential to play a key role in commercial full spectrum display.
作者
曹培源
杨波波
曹艳蓉
郑飞
邹军
Peiyuan Cao;Bobo Yang;Yanrong Cao;Fei Zheng;Jun Zou(School of Science,Shanghai Institute of Technology,Shanghai 201418,China;Institute of Future Lighting,Academy for Engineering and Technology,Fudan University,Shanghai 200433,China;School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai 201418,China;Institute of New Materials&Industrial Technology,Wenzhou University,Wenzhou 325024,China)
基金
supported by the Science and Technology Planning Project of Zhejiang Province(No.2018C01046)
Enterprise-Funded Latitudinal Research Projects of China(Nos.J2016-141,J2017-171,J2017-293,and J2017-243)
Shanghai Sailing Program(No.18YF1422500)
Research Start-Up Project of Shanghai Institute of Technology(No.YJ2018-9)
