Highly efficient and stable white LEDs based on pure red narrow bandwidth emission triangular carbon quantum dots for wide-color gamut backlight displays  

作　　者：Fanglong Yuan Ping He Zifan Xi Xiaohong Li Yunchao Li Haizheng Zhong Louzhen Fan Shihe Yang 

机构地区：[1]College of Chemistry,Beijing Normal University,Beijing 100875,China [2]Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems,School of Materials Science and Engineering Beijing Institute of Technology,Beijing 100081,China [3]Guangdong Key Lab of Nano-Micro Material Research,School of Chemical Biology and Biotechnology,Shenzhen Graduate School,Peking University,Shenzhen 518055,China

出　　处：《Nano Research》2019年第7期1669-1674,共6页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China (NSFC)(Nos.21573019 and 21872010);the Major Research Plan of the National Natural Science Foundation of China (No.21233003);the Fundamental Research Funds for the Central Universities.

摘　　要：High-performance white light-emitting diodes (WLEDs) hold great potential for the next-generation backlight display applications.However,achieving highly efficient and stable WLEDs with wide-color-gamut has remained a formidable goal.Reported here is the first example of pure red narrow bandwidth emission triangular CQDs (PR-NBE-T-CQDs) with photoluminescence peaking at 610 nm.The PR-NBE-T-CQDs synthesized from resorcinol show high quantum yield (QY) of 72% with small full width at half maximum of 33 nm.By simply controlling the reaction time,pure green (PG-) NBE-T-CQDs with high QY of 75% were also obtained.Highly efficient and stable WLEDs with wide-color-gamut based on PR- and PG-NBE-T-CQDs was achieved.This WLED showed a remarkable wide-color gamut of 110% NTSC and high power efficiency of 86.5 lumens per Watt.Furthermore,such WLEDs demonstrate outstanding stability.This work will set the stage for developing highly efficient,low cost and environment-friendly WLEDs based on CQDs for the next-generation wide-color gamut backlight displays.

关 键 词：PURE RED carbon quantum DOTS white LIGHT-EMITTING diodes wide-color gamut highly efficient 

分 类 号：O4[理学—物理]