4.6 Article

Perovskite/Organic Hybrid White Electroluminescent Devices with Stable Spectrum and Extended Operating Lifetime

Journal

ACS ENERGY LETTERS
Volume 7, Issue 1, Pages 523-532

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.1c02631

Keywords

-

Funding

  1. National Natural Science Foundation of China [51625301, 91733302, 51861145301]
  2. Basic and Applied Basic Research Foundation of Guangdong Province [2019B1515120023]
  3. Guangdong Provincial Department of Science and Technology [2016B090906003, 2016TX03C175]
  4. Dongguan Innovative Research Team Program [2018607201002]

Ask authors/readers for more resources

By embedding an ultrathin doping-free organic phosphorescent interlayer between a perovskite layer and an organic layer, a high-performance white LED device with excellent spectral stability and long operating lifetime is achieved.
We demonstrate a kind of perovskite/organic hybrid white electroluminescent device, where an ultrathin doping-free organic phosphorescent interlayer is embedded between a p-type hole transport layer and a n-type electron transport layer to give an organic p-i-n heterojunction unit, which is superimposed layer by layer onto a quasi-two-dimensional perovskite layer. The unique carrier transport character of the p-type hole transport layer leads to a broad carrier recombination region approaching the p-i-n heterojunction unit. As a result, pure-red emission from the perovskite layer and sky-blue emission from the organic p-i-n heterojunction were simultaneously achieved to generate white emission with a peak external quantum efficiency of 7.35%, Commission Internationale de L'Eclairage coordinates of (0.424, 0.363), and a low correlated color temperature of 2868 K. More importantly, excellent spectral stability and a greatly enhanced operating lifetime (10-fold longer than those of perovskite-only LEDs) are simultaneously achieved, providing a new path for the development of high-performance white LEDs.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available