Jaekook Ha, Sooho Lee, Myoungjin Park, Heunggyu Kim, Yun Ku Jung, Changyeol Han, Jaekwon Hwang, Gyehyun Park, Hak June Lee, Wan Ki Bae, Seunguk Noh, Donghoon Kwak, Sehun Kim, Yeo-geon Yoon, Changhee Lee
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Dual ligand exchange of Cd-free quantum dots and optimal control of ink formulation for improving the performance of all-inkjet-printed qunatum dot light-emitting diodes
Quantum dot light-emitting diodes (QD-LEDs) have received significant attention as a next-generation display technology aimed at large-size panel production with lower manufacturing costs and excellent picture quality. Here, we demonstrated all-inkjet-printed 12.4-in. full-color QD-LED display with the 182-ppi resolution. The efficiency and lifetime of inkjet-printed QD-LEDs were improved through the ligand exchange of Cd-free quantum dots (QDs), red and green InP and blue ZnSeTe QDs, and optimal control of ink formulation. Dual ligands enhanced colloidal stability and carrier transport properties. The introduction of appropriate additives in the mixed solvent system improved the inkjet processibility and the morphology of inkjet-printed layers.
期刊介绍：
The Journal of the Society for Information Display publishes original works dealing with the theory and practice of information display. Coverage includes materials, devices and systems; the underlying chemistry, physics, physiology and psychology; measurement techniques, manufacturing technologies; and all aspects of the interaction between equipment and its users. Review articles are also published in all of these areas. Occasional special issues or sections consist of collections of papers on specific topical areas or collections of full length papers based in part on oral or poster presentations given at SID sponsored conferences.
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