High-performance single-component white light-emitting diodes based on donor-acceptor integrated carbon nitride  

作　　者：Ning Wu Fangxu Dai Kunpeng Wang Yunhu Wang Xinyi Wang Kai Zhang Mingming Zhang Kang Liu Jixiang Xu Lei Wang Jun Xing 

机构地区：[1]Key Laboratory of Eco-chemical Engineering,Ministry of Education,College of Chemistry and Molecular Engineering,Qingdao University of Science&Technology,Qingdao 266042,China [2]School of Pharmacy,Jining Medical University,Rizhao 276800,China [3]College of Sino-German Science and Technology,Qingdao University of Science&Technology,Qingdao 266042,China

出　　处：《Science China Chemistry》2025年第3期1136-1143,共8页中国科学(化学英文版)

基　　金：supported by Taishan Scholar Program;the Natural Science Foundation of Qingdao,China (23-2-1-245-zyydjch);the National Natural Science Foundation of China (52171140)。

摘　　要：White light-emitting diodes(WLEDs)as energy-saving light sources are widely used to alleviate the rising electric consumption.Most commercial WLEDs are blue/yellow-mixed emitting devices,which have some disadvantages,such as physiological damages of rich blue light,complex device structure and color aging.It is essential to develop single-component WLEDs with quasi-solar spectrum to overcome these problems.Here we demonstrate a high-performance single-component WLED based on donor-acceptor integrated carbon nitride(DACN)material.The donor-acceptor simultaneously increases the photoluminescence efficiency and the carrier mobility of graphitic carbon nitride(g-CN),hence,the DACN-based WLED reaches a milestone in maximum luminance of 2,045 cdm^(-2)and maximum external quantum efficiency of 2.2%,which are one order of magnitude higher than pristine g-CN-based LED.Furthermore,the DACN-based WLED emits broadband white light with color coordinates of(0.34,0.44)and a color temperature of 5,163 K.Our works open a way to boost optoelectronic properties of g-CN materials and show their promising application in single-component WLEDs.

关 键 词：carbon nitride light-emitting diode DONOR-ACCEPTOR white light 

分 类 号：TN312.8[电子电信—物理电子学] TQ127.16[化学工程—无机化工]