Quantum-dot and organic hybrid tandem light-emitting diodes with color-selecting intermediate electrodes for full-color displays

Zhang, Heng1,2; Chen, Lianna2; Chen, Shuming2,3

2021-08-01

10.1039/d1nr04630f

Nanoscale   影响因子和分区

2040-3364

2040-3372

The immaturity of the color patterning technology and the poor stability of blue (B) quantum-dots are two of the challenges that restrict the development of quantum-dot electroluminescence displays. In this work, we demonstrate a hybrid tandem light-emitting diode (LED), in which a yellow (Y) quantum-dot LED and a B organic LED are vertically connected using an IZO/Ag intermediate electrode. The transparent IZO sets the resonance wavelength of the Y-QLED and thus selectively converts the yellow emission into R or G emission, while the semi-reflective Ag enhances the optical interference of the B LED and hence improves the color saturation of the B emission. Enabled by the multi-functionalities of color-selection and color-enhancement of the intermediate electrode, the tandem LED can emit independently controllable R, G and B colors with a high color gamut of similar to 110% NTSC without the need to pattern the light-emitting layers. The demonstrated tandem LED could provide a promising way for the realization of emitting-layer-patterning-free, color-filter-free and wide-color-gamut electroluminescence displays.

SCI ; EI

英语

通讯

National Natural Science Foundation of China[61775090,62174075] ; Guangdong Natural Science Funds for Distinguished Young Scholars[2016A030306017]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000703042600001

ROYAL SOC CHEMISTRY

20214311044969

Color ; Electrodes ; Electroluminescence ; Light ; Nanocrystals ; Semiconductor quantum dots

Electricity: Basic Concepts and Phenomena:701.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light, Optics and Optical Devices:741 ; Light/Optics:741.1 ; Nanotechnology:761 ; Crystalline Solids:933.1

Web of Science

1.Harbin Inst Technol, Harbin 150001, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Minist Educ, Key Lab Energy Convers & Storage Technol, Shenzhen, Peoples R China

Zhang, Heng,Chen, Lianna,Chen, Shuming. Quantum-dot and organic hybrid tandem light-emitting diodes with color-selecting intermediate electrodes for full-color displays[J]. Nanoscale,2021,13:16781-16789.

Zhang, Heng,Chen, Lianna,&Chen, Shuming.(2021).Quantum-dot and organic hybrid tandem light-emitting diodes with color-selecting intermediate electrodes for full-color displays.Nanoscale,13,16781-16789.

Zhang, Heng,et al."Quantum-dot and organic hybrid tandem light-emitting diodes with color-selecting intermediate electrodes for full-color displays".Nanoscale 13(2021):16781-16789.