Developing single-pixel color-tunable electroluminescence technology represents a practical approach to circumvent current limitations in pixel processing and longevity.However,existing single-pixel color-tunable quan...Developing single-pixel color-tunable electroluminescence technology represents a practical approach to circumvent current limitations in pixel processing and longevity.However,existing single-pixel color-tunable quantum dot light-emitting diodes(QLEDs)devices predominantly employ complex tandem structures.Herein,we demonstrate single-layer color-tunable QLEDs by the real-time interface exciplex modulation with AgInZnS(AIZS)quantum dots(QDs).The dynamically color-tunable QLEDs based on green-and red-emitting AIZS QDs exhibit broad spectral coverage,spanning from green to blue,red to yellow,as well as standard white emission.The fabricated devices achieve a leading maximum external quantum efficiency of 5%for quaternary alloy AIZS-based QLEDs.Furthermore,we successfully demonstrate patterned and large-area QLEDs,systematically confirming their significant potential for application in full-color display and lighting technologies.展开更多
基金supported by the National Key Research and Development Program of China(2024YFB3612400 and 2024YFA1210002)the National Natural Science Foundation of China(62574111,62204120,52533012,U24A20286,52131304,and 62261160392)+1 种基金International Cooperation Program of Jiangsu Province of China(BZ2024038)the Fundamental Research Funds for the Central Universities(30925010415).
文摘Developing single-pixel color-tunable electroluminescence technology represents a practical approach to circumvent current limitations in pixel processing and longevity.However,existing single-pixel color-tunable quantum dot light-emitting diodes(QLEDs)devices predominantly employ complex tandem structures.Herein,we demonstrate single-layer color-tunable QLEDs by the real-time interface exciplex modulation with AgInZnS(AIZS)quantum dots(QDs).The dynamically color-tunable QLEDs based on green-and red-emitting AIZS QDs exhibit broad spectral coverage,spanning from green to blue,red to yellow,as well as standard white emission.The fabricated devices achieve a leading maximum external quantum efficiency of 5%for quaternary alloy AIZS-based QLEDs.Furthermore,we successfully demonstrate patterned and large-area QLEDs,systematically confirming their significant potential for application in full-color display and lighting technologies.
