Metal halide perovskites have emerged as promising light-emitting materials for next-generation displays owing to their remarkable material characteristics including broad color tunability,pure color emission with rem...Metal halide perovskites have emerged as promising light-emitting materials for next-generation displays owing to their remarkable material characteristics including broad color tunability,pure color emission with remarkably narrow bandwidths,high quantum yield,and solution processability.Despite recent advances have pushed the luminance efficiency of monochromic perovskite light-emitting diodes(PeLEDs)to their theoretical limits,their current fabrication using the spincoating process poses limitations for fabrication of full-color displays.To integrate PeLEDs into full-color display panels,it is crucial to pattern red–green–blue(RGB)perovskite pixels,while mitigating issues such as cross-contamination and reductions in luminous efficiency.Herein,we present state-of-the-art patterning technologies for the development of full-color PeLEDs.First,we highlight recent advances in the development of efficient PeLEDs.Second,we discuss various patterning techniques of MPHs(i.e.,photolithography,inkjet printing,electron beam lithography and laserassisted lithography,electrohydrodynamic jet printing,thermal evaporation,and transfer printing)for fabrication of RGB pixelated displays.These patterning techniques can be classified into two distinct approaches:in situ crystallization patterning using perovskite precursors and patterning of colloidal perovskite nanocrystals.This review highlights advancements and limitations in patterning techniques for PeLEDs,paving the way for integrating PeLEDs into full-color panels.展开更多
In the future electronics,all device components will be connected wirelessly to displays that serve as information input and/or output ports.There is a growing demand of flexible and wearable displays,therefore,for in...In the future electronics,all device components will be connected wirelessly to displays that serve as information input and/or output ports.There is a growing demand of flexible and wearable displays,therefore,for information input/output of the nextgeneration consumer electronics.Among many kinds of light-emitting devices for these next-generation displays,quantum dot light-emitting diodes(QLEDs)exhibit unique advantages,such as wide color gamut,high color purity,high brightness with low turn-on voltage,and ultrathin form factor.Here,we review the recent progress on flexible QLEDs for the next-generation displays.First,the recent technological advances in device structure engineering,quantum-dot synthesis,and high-resolution full-color patterning are summarized.Then,the various device applications based on cutting-edge quantum dot technologies are described,including flexible white QLEDs,wearable QLEDs,and flexible transparent QLEDs.Finally,we showcase the integration of flexible QLEDs with wearable sensors,micro-controllers,and wireless communication units for the next-generation wearable electronics.展开更多
基金the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(Grant No.2021R1C1C1007997).
文摘Metal halide perovskites have emerged as promising light-emitting materials for next-generation displays owing to their remarkable material characteristics including broad color tunability,pure color emission with remarkably narrow bandwidths,high quantum yield,and solution processability.Despite recent advances have pushed the luminance efficiency of monochromic perovskite light-emitting diodes(PeLEDs)to their theoretical limits,their current fabrication using the spincoating process poses limitations for fabrication of full-color displays.To integrate PeLEDs into full-color display panels,it is crucial to pattern red–green–blue(RGB)perovskite pixels,while mitigating issues such as cross-contamination and reductions in luminous efficiency.Herein,we present state-of-the-art patterning technologies for the development of full-color PeLEDs.First,we highlight recent advances in the development of efficient PeLEDs.Second,we discuss various patterning techniques of MPHs(i.e.,photolithography,inkjet printing,electron beam lithography and laserassisted lithography,electrohydrodynamic jet printing,thermal evaporation,and transfer printing)for fabrication of RGB pixelated displays.These patterning techniques can be classified into two distinct approaches:in situ crystallization patterning using perovskite precursors and patterning of colloidal perovskite nanocrystals.This review highlights advancements and limitations in patterning techniques for PeLEDs,paving the way for integrating PeLEDs into full-color panels.
基金This research was supported by IBS-R006-D1 and IBS-R006-A1.
文摘In the future electronics,all device components will be connected wirelessly to displays that serve as information input and/or output ports.There is a growing demand of flexible and wearable displays,therefore,for information input/output of the nextgeneration consumer electronics.Among many kinds of light-emitting devices for these next-generation displays,quantum dot light-emitting diodes(QLEDs)exhibit unique advantages,such as wide color gamut,high color purity,high brightness with low turn-on voltage,and ultrathin form factor.Here,we review the recent progress on flexible QLEDs for the next-generation displays.First,the recent technological advances in device structure engineering,quantum-dot synthesis,and high-resolution full-color patterning are summarized.Then,the various device applications based on cutting-edge quantum dot technologies are described,including flexible white QLEDs,wearable QLEDs,and flexible transparent QLEDs.Finally,we showcase the integration of flexible QLEDs with wearable sensors,micro-controllers,and wireless communication units for the next-generation wearable electronics.
