In situ n-doped nanocrystalline electron-injection-layer for general-lighting quantum-dot LEDs

Yizhen Zheng, Xing Lin (), Jiongzhao Li, Jianan Chen, Wenhao Wu, Zixuan Song, Yuan Gao, Zhuang Hu, Huifeng Wang, Zikang Ye, Haiyan Qin and Xiaogang Peng ()
Additional contact information
Yizhen Zheng: Zhejiang University
Xing Lin: Zhejiang University
Jiongzhao Li: Zhejiang University
Jianan Chen: Zhejiang University
Wenhao Wu: Zhejiang University
Zixuan Song: Zhejiang University
Yuan Gao: Najing Technology Corporation Ltd.
Zhuang Hu: Zhejiang University
Huifeng Wang: Zhejiang University
Zikang Ye: Zhejiang University
Haiyan Qin: Zhejiang University
Xiaogang Peng: Zhejiang University

Nature Communications, 2025, vol. 16, issue 1, 1-12

Abstract: Abstract Quantum-dot optoelectronics, pivotal for lighting, lasing and photovoltaics, rely on nanocrystalline oxide electron-injection layer. Here, we discover that the prevalent surface magnesium-modified zinc oxide electron-injection layer possesses poor n-type attributes, leading to the suboptimal and encapsulation-resin-sensitive performance of quantum-dot light-emitting diodes. A heavily n-doped nanocrystalline electron-injection layer—exhibiting ohmic transport with 1000 times higher electron conductivity and improved hole blockage—is developed via a simple reductive treatment. The resulting sub-bandgap-driven quantum-dot light-emitting diodes exhibit optimal efficiency and extraordinarily-high brightness, surpassing current benchmarks by at least 2.6-fold, and reaching levels suitable for quantum-dot laser diodes with only modest bias. This breakthrough further empowers white-lighting quantum-dot light-emitting diodes to exceed the 2035 U.S. Department of Energy’s targets for general lighting, which currently accounts for ~15% of global electricity consumption. Our work opens a door for understanding and optimizing carrier transport in nanocrystalline semiconductors shared by various types of solution-processed optoelectronic devices.

Date: 2025
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-025-58471-5 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:16:y:2025:i:1:d:10.1038_s41467-025-58471-5

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

DOI: 10.1038/s41467-025-58471-5

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 ().