White Quantum Dot Light‑emitting Devices with Ultrahigh Pixel Density

Wenchen ZHENG; Yueting ZHENG; Jieyu BAI; Denglin ZHAO; Tingtao MENG; Zhongwei XU; Haobing ZHAO; Tailiang GUO; Fushan LI

doi:10.19453/j.cnki.1005-488x.2023.04.002

Journals >Optoelectronic Technology >Volume 43 >Issue 4 >Page 287 > Article

Optoelectronic Technology
Vol. 43, Issue 4, 287 (2023)

White Quantum Dot Light‑emitting Devices with Ultrahigh Pixel Density

Wenchen ZHENG, Yueting ZHENG, Jieyu BAI, Denglin ZHAO, Tingtao MENG, Zhongwei XU, Haobing ZHAO, Tailiang GUO, and Fushan LI^*

Author Affiliations

College of Physics and Information Engineering, Fuzhou University, Fuzhou 350108,CHN

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DOI: 10.19453/j.cnki.1005-488x.2023.04.002 Cite this Article

Wenchen ZHENG, Yueting ZHENG, Jieyu BAI, Denglin ZHAO, Tingtao MENG, Zhongwei XU, Haobing ZHAO, Tailiang GUO, Fushan LI. White Quantum Dot Light‑emitting Devices with Ultrahigh Pixel Density[J]. Optoelectronic Technology, 2023, 43(4): 287 Copy Citation Text

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Abstract

With the continuous development of near-eye display technology， the next generation display technology has more stringent requirements on resolution. In this work， a Langmuir-Blodgett transfer printing （LB-TP） technology was used to realize high-performance quantum-dot light-emitting diodes （QLEDs） with a resolution of 12 700 pixels per inch （ppi）. The external quantum efficiency （EQE） of the red QLED device prepared by this method was as high as 15.27%. In addition， a white ultra-high resolution QLED device with an EQE of 4.9% was successfully realized. This work could provide a route for manufacturing of the next generation high resolution display.

Keywords

high resolution QLED transfer printing

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