Please use this identifier to cite or link to this item: doi:10.22028/D291-30036
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Title: High‐Resolution Inkjet Printing of Quantum Dot Light‐Emitting Microdiode Arrays
Author(s): Yang, Peihua
Zhang, Long
Kang, Dong Jin
Strahl, Robert
Kraus, Tobias
Language: English
Title: Advanced optical materials
Volume: 8
Issue: 1
Startpage: 1
Endpage: 7
Publisher/Platform: Wiley-VCH
Year of Publication: 2020
Publikation type: Journal Article
Abstract: The direct printing of microscale quantum dot light‐emitting diodes (QLEDs) is a cost‐effective alternative to the placement of pre‐formed LEDs. The quality of printed QLEDs currently is limited by nonuniformities in droplet formation, wetting, and drying during inkjet printing. Here, optimal ink formulation which can suppress nonuniformities at the pixel and array levels is demonstrated. A solvent mixture is used to tune the ejected droplet size, ensure wetting, and provoke Marangoni flows that prevent coffee stain rings. Arrays of green QLED devices are printed at a resolution of 500 pixels in.−1 with a maximum luminance of ≈3000 cd m−2 and a peak current efficiency of 2.8 cd A−1. The resulting array quality is sufficient to print displays at state‐of‐the‐art resolutions
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Link to this record: hdl:20.500.11880/28622
ISSN: 2195-1071
Date of registration: 21-Jan-2020
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
Professorship: NT - Prof. Dr. Tobias Kraus
Collections:UniBib – Die Universitätsbibliographie

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