Abstract
High-performance carbon dots(CDs)allowing the application in high-end display devices are highly de-sirable and usually limited by the absence of simple and easy synthesis methods.In this work,we ex-ploited an easy-to-implement strategy for the one-step synthesis of green-emitting CDs(G-CDs)with superb optical properties.The G-CDs were synthesized using m-phenylenediamine(m-PD)as a single pre-cursor,and the reaction reacted at 180 ℃ for 12 h The resultant G-CDs exhibit high-purity and excitation-independent green fluorescence with the photoluminescence(PL)peak located at 516 nm,full width at half maximum(FWHM)of 46 nm,and PL quantum yield(QY)of～80％under the 470 nm excitation light.The G-CDs and corresponding composite film prepared with polyvinyl butyral(G-CDs@PVB)exhibit good PL stability after undergoing long-time storage for one year and 360 h exposure under 460 nm blue light.The G-CDs@PVB film was used as color-conversion materials in green-emitting light-emitting diode(LED)application,exhibiting a Commission internationale de l'Eclairage(CIE)chromaticity coordinate of(0.21,0.44).The film was also used in CD-based liquid crystal display(CD-LCD)application,achieving a color gamut value of 85％.This work will offer a working basis for the synthesis of high-performance CDs as well as their application in displays.
基金项目
Jiangsu Funding Program for Excellent Postdoctoral Talent(2022ZB369)
江苏高校优势学科建设工程项目()
维普
万方数据