Spectra stable blue perovskite light-emitting diodes

Yuanzhi Jiang, Chaochao Qin, Minghuan Cui, Tingwei He, Kaikai Liu, Yanmin Huang, Menghui Luo, Li Zhang, Hongyu Xu, Saisai Li, Junli Wei, Zhiyong Liu, Huanhua Wang, Gi-Hwan Kim, Mingjian Yuan () and Jun Chen
Additional contact information
Yuanzhi Jiang: Nankai University
Chaochao Qin: Henan Normal University
Minghuan Cui: Henan Normal University
Tingwei He: Nankai University
Kaikai Liu: Henan Normal University
Yanmin Huang: Nankai University
Menghui Luo: Nankai University
Li Zhang: Nankai University
Hongyu Xu: Nankai University
Saisai Li: Nankai University
Junli Wei: Nankai University
Zhiyong Liu: Henan Normal University
Huanhua Wang: Chinese Academy of Science
Gi-Hwan Kim: Korea Photonics Technology Institute
Mingjian Yuan: Nankai University
Jun Chen: Nankai University

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Device performance and in particular device stability for blue perovskite light-emitting diodes (PeLEDs) remain considerable challenges for the whole community. In this manuscript, we conceive an approach by tuning the ‘A-site’ cation composition of perovskites to develop blue-emitters. We herein report a Rubidium-Cesium alloyed, quasi-two-dimensional perovskite and demonstrate its great potential for pure-blue PeLED applications. Composition engineering and in-situ passivation are conducted to further improve the material’s emission property and stabilities. Consequently, we get a prominent film photoluminescence quantum yield of around 82% under low excitation density. Encouraged by these findings, we finally achieve a spectra-stable blue PeLED with the peak external quantum efficiency of 1.35% and a half-lifetime of 14.5 min, representing the most efficient and stable pure-blue PeLEDs reported so far. The strategy is also demonstrated to be able to generate efficient perovskite blue emitters and PeLEDs in the whole blue spectral region (from 454 to 492 nm).

Date: 2019
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-019-09794-7 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:10:y:2019:i:1:d:10.1038_s41467-019-09794-7

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

DOI: 10.1038/s41467-019-09794-7

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 ().