TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Yang, Peihua
A1  - Zhang, Long
A1  - Kang, Dong Jin
A1  - Strahl, Robert
A1  - Kraus, Tobias
T1  - High-Resolution Inkjet Printing of Quantum Dot Light-Emitting Microdiode Arrays
JF  - Advanced Optical Materials
N2  - 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.
KW  - high resolution
KW  - inkjet printing
KW  - light-emitting diodes
KW  - quantum dots
KW  - uniform pixel arrays
Y1  - 2020
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:291:415-1636
U6  - https://doi.org/10.1002/adom.201901429
DO  - https://doi.org/10.1002/adom.201901429
VL  - 8
IS  - 1
SP  - 1901429
ER  -