Stable and efficient CsPbI3 quantum-dot light-emitting diodes with strong quantum confinement

Yanming Li, Ming Deng, Xuanyu Zhang, Ting Xu, Ximeng Wang, Zhiwei Yao, Qiangqiang Wang, Lei Qian and Chaoyu Xiang ()
Additional contact information
Yanming Li: Chinese Academy of Science
Ming Deng: Chinese Academy of Science
Xuanyu Zhang: Chinese Academy of Science
Ting Xu: Shenzhen Institute of Information Technology
Ximeng Wang: University of Wisconsin-Madison
Zhiwei Yao: Chinese Academy of Science
Qiangqiang Wang: Chinese Academy of Science
Lei Qian: Chinese Academy of Science
Chaoyu Xiang: Chinese Academy of Science

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Even though lead halide perovskite has been demonstrated as a promising optoelectronic material for next-generation display applications, achieving high-efficiency and stable pure-red (620~635 nm) emission to cover the full visible wavelength is still challenging. Here, we report perovskite light-emitting diodes emitting pure-red light at 628 nm achieving high external quantum efficiencies of 26.04%. The performance is attributed to successful synthesizing strongly confined CsPbI3 quantum dots with good stability. The strong binding 2-naphthalene sulfonic acid ligands are introduced after nucleation to suppress Ostwald ripening, meanwhile, ammonium hexafluorophosphate exchanges long chain ligands and avoids regrowth by strong binding during the purification process. Both ligands enhance the charge transport ability of CsPbI3 quantum dots. The state-of-the-art synthesis of pure red CsPbI3 quantum dots achieves 94% high quantum efficiency, which can maintain over 80% after 50 days, providing a method for synthesizing stable strong confined perovskite quantum dots.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-50022-8 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50022-8

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-50022-8

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().