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

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.