High-efficiency and high-resolution patterned quantum dot light emitting diodes by electrohydrodynamic printing.

ABSTRACT: The development of quantum dot light-emitting diode (QLED) fabrication technologies for high-definition and low-cost displays is an important research topic. However, commercially available piezoelectric inkjet printing has reached its limit in reducing pixel sizes, which restricts its potential use in high-resolution displays. Here, we exhibit an electrohydrodynamic (EHD) printing method for manufacturing QLEDs with a high resolution of 500 ppi that remarkably surpasses the resolution of conventional inkjet printing displays. By optimizing the EHD printing process, a high-resolution pixelated bottom-emitting passive matrix QLED with a maximal current efficiency of 14.4 cd A^-1 in a pixel size of 5 μm × 39 μm was achieved, indicating the capability of the EHD method in superfine

SUBMITTER: Wang H 

PROVIDER: S-EPMC9926896 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature