Solution-processed green and blue quantum-dot light-emitting diodes with eliminated charge leakage

@article{Deng2022SolutionprocessedGA,
  title={Solution-processed green and blue quantum-dot light-emitting diodes with eliminated charge leakage},
  author={Yunzhou Deng and Feng Peng and Yaomin Lu and Xitong Zhu and Wangxiao Jin and Jing Qiu and Jiawei Dong and Yanlei Hao and Dawei Di and Yuan Gao and Tulai Sun and Ming Zhang and Feng Liu and Linjun Wang and Lei Ying and Fei Huang and Yizheng Jin},
  journal={Nature Photonics},
  year={2022}
}
Quantum-dot light-emitting diodes (QD-LEDs) promise a new generation of efficient, low-cost, large-area and flexible electroluminescent devices. However, the inferior performance of green and blue QD-LEDs is hindering the commercialization of QD-LEDs in display and solidstate lighting. Here, we demonstrate best-performing green and blue QD-LEDs with ~100% conversion of the injected charge carriers into emissive excitons. Key to this success is eliminating electron leakage at the organic… 
1 Citations
Quantum-dot light-emitting diodes with Fermi-level pinning at the hole-injection/hole-transporting interfaces
Quantum-dot light-emitting diodes (QLEDs) are multilayer electroluminescent devices promising for next-generation display and solid-state-lighting technologies. In the state-of-the-art QLEDs,

References

SHOWING 1-10 OF 91 REFERENCES
Bright and efficient full-color colloidal quantum dot light-emitting diodes using an inverted device structure.
We report highly bright and efficient inverted structure quantum dot (QD) based light-emitting diodes (QLEDs) by using solution-processed ZnO nanoparticles as the electron injection/transport layer
Droop-Free Colloidal Quantum Dot Light-Emitting Diodes.
TLDR
QD-LEDs operating with high internal efficiencies (up to 70%) virtually droop-free up to unprecedented brightness of >100,000 cd m-2 (at ∼500 mA cm-2) are demonstrated.
Solution-processed, high-performance light-emitting diodes based on quantum dots
TLDR
This optoelectronic performance is achieved by inserting an insulating layer between the quantum dot layer and the oxide electron-transport layer to optimize charge balance in the device and preserve the superior emissive properties of the quantum dots.
Efficient and stable blue quantum dot light-emitting diode.
TLDR
It is found that hydrofluoric acid and zinc chloride additives are effective at enhancing luminescence efficiency by eliminating stacking faults in the ZnSe crystalline structure and chloride passivation through liquid or solid ligand exchange leads to slow radiative recombination, high thermal stability and efficient charge-transport properties.
Visible quantum dot light-emitting diodes with simultaneous high brightness and efficiency
Quantum dot light-emitting diodes are promising light sources for applications in displays. However, to date, there have been no reports of devices that simultaneously offer both high brightness and
Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent
Metal halide perovskite materials are an emerging class of solution-processable semiconductors with considerable potential for use in optoelectronic devices1–3. For example, light-emitting diodes
Bright colloidal quantum dot light-emitting diodes enabled by efficient chlorination
The external quantum efficiencies of state-of-the-art colloidal quantum dot light-emitting diodes (QLEDs) are now approaching the limit set by the out-coupling efficiency. However, the brightness of
Bright and Stable Quantum Dot Light‐Emitting Diodes
TLDR
This work demonstrates bright and stable QLEDs on a Si substrate expanding their potential application boundary over the present art and grants tailored interface to quantum dots maximizing quantum yield and mitigating nonradiative Auger decay of multi-excitons generated at the high J regimes.
Highly efficient and stable InP/ZnSe/ZnS quantum dot light-emitting diodes
TLDR
A method of engineering efficient and stable InP/ZnSe/ ZnS quantum dot light-emitting diodes (QD-LEDs) has improved their performance to the level of state-of-the-art cadmium-containing QD- LEDs, removing the problem of the toxicity of cadMium in large-panel displays.
Quantum‐Dot Light‐Emitting Diodes for Outdoor Displays with High Stability at High Brightness
Quantum dot light‐emitting diodes (QLEDs) are considered to be the candidate light sources with the most potential for applications in displays. Recent advances in luminance, external quantum
...
1
2
3
4
5
...