首页|Fluorescent,multifunctional anti-counterfeiting,fast response electrophoretic display based on TiO2/CsPbBr3 composite particles
Fluorescent,multifunctional anti-counterfeiting,fast response electrophoretic display based on TiO2/CsPbBr3 composite particles
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国家科技期刊平台
NETL
NSTL
万方数据
Traditional optical anti-counterfeiting(AC)is achieved by static printed images,which makes them susceptible to lower levels of security and easier replication.Therefore,it is essential to develop AC device with dynamic modulation for higher security.Electrophoretic display(EPD)has the advantages of low power consumption,high ambient contrast ratio,and capability of showing dynamic images which is suitable for dynamic AC applications.Herein,we prepared a dynamical AC device based on a fluorescent EPD,and achieving the image switch between black,white,and green fluorescence states under the dual-mode driving(electronic field and UV light).We loaded perovskite quantum dots(CsPbBr3)onto the TiO2 particles and further prepared fluorescent electrophoretic particles TiO2/CsPbBr3-3-PLMA(TiO/CPB-3)by grafting and polymerizing method.In addition,we fabricated the AC devices based on the fluorescent EPD,which exhibits the multifunctional AC,where the fluorescent EPD has a fast response time of 350 ms,a high contrast ratio of 17,and bright green fluorescence.This prototype demonstrates a new way for future dynamic AC and identification.
State Key Laboratory of Opto-electronic Materials and Technology,Guangdong Province Key Laboratory of Display Materials and Technologies,School of Electronics and Information Technology,Sun Yat-Sen University,Guangzhou 510006,China
National Key Research and Development Program of ChinaMOSTKey-Area Research and Development Program of Guangdong ProvinceScientific and Technological Projection of Guangdong province
国家科技期刊平台
NSTL
万方数据
