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X-WR-CALNAME:Department of Electrical and Computer Engineering (HKUECE) 電機與計算機工程系
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X-WR-CALDESC:Events for Department of Electrical and Computer Engineering (HKUECE) 電機與計算機工程系
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TZID:Asia/Hong_Kong
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DTSTART:20230101T000000
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DTSTART;TZID=Asia/Hong_Kong:20240124T110000
DTEND;TZID=Asia/Hong_Kong:20240124T123000
DTSTAMP:20260513T064932
CREATED:20240111T025050Z
LAST-MODIFIED:20250114T074434Z
UID:17930-1706094000-1706099400@ece.hku.hk
SUMMARY:Critical Issues in the Electrohydrodynamic Inject Printing – Examples of printing fluorescent quantum dots
DESCRIPTION:Micro-printing is a good way to manufacture patterning structures in modern manufacture\, which has been widely used in fields\, e.g. micro-LED display\, benefiting from the high material utilization. The electrohydrodynamic inject printing (EHD-IP) is proven to be with the highest spatial resolution among various micro-printing techniques. Still\, the ink control and homogeneity are two main obstacles EHD-IP are facing before its possible fully commercialization. In this talk\, by taking the example of printing color conversion layer for micro-LED displays\, I will introduce new designs of EHD specialized inks that have been developed in our research group recently. (a) The dual non-polar solvent perovskite QD colloidal ink for EHD-IP; (b) Three dimensional micro-pillars arrays manufactured by EHD-IP; (c) Dual ligands passivated red perovskite QDs inks. During the introduction of these work\, I would like to discuss some fundamental principles\, such as the differences in dynamics between inks employing polar and non-polar solvents\, interaction between ligands and solvent and its effect on colloidal stability\, how to decoupling designs of functional QDs and E-field driven-able ink\, etc. These issues are universally applied to various kinds of EHD specialized inks and determine the final quality of EHD-IP. \nBiography of the speaker: \nYue received his B.Sc. in the Department of Physics at Southeast University. He received his Ph.D. degree from the Department of Electronic Science at Xiamen University. He is currently an associate professor in the Department of Electronic Science\, Xiamen University. His research scope includes a) Micro-LED display technology; b) Electrohydrodynamic inkjet printing for quantum dot color conversion layers; c) GaN and AlGaN based semiconductor material and devices and the optoelectronic properties; d) All-inorganic and hybrid perovskite quantum dots and the optoelectronic properties. As first and/or corresponding author\, he published more than 20 papers on journals such as Adv. Mat.\, Adv. Opt. Mat.\, Small\, Appl. Phys. Lett.\, Chinese Chemical Letters\, etc. He hosted fundings like NSF of China\, NSF and cooperation funding of Fujian Province\, etc.\n\nAll are welcome.
URL:https://ece.hku.hk/events/critical-issues-in-the-electrohydrodynamic-inject-printing-examples-of-printing-fluorescent-quantum-dots/
CATEGORIES:Seminar
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