Mixed halide perovskites for spectrally stable and high-efficiency blue light-emitting diodes

Max Karlsson, Ziyue Yi, Sebastian Reichert, Xiyu Luo, Weihua Lin, Zeyu Zhang, Chunxiong Bao, Rui Zhang, Sai Bai, Guanhaojie Zheng, Pengpeng Teng, Lian Duan, Yue Lu, Kaibo Zheng, Tönu Pullerits, Carsten Deibel, Weidong Xu (), Richard Friend and Feng Gao ()
Additional contact information
Max Karlsson: Linköping University
Ziyue Yi: Linköping University
Sebastian Reichert: Technische Universität Chemnitz
Xiyu Luo: Linköping University
Weihua Lin: Lund University
Zeyu Zhang: Beijing University of Technology
Chunxiong Bao: Linköping University
Rui Zhang: Linköping University
Sai Bai: Linköping University
Guanhaojie Zheng: Linköping University
Pengpeng Teng: Linköping University
Lian Duan: Tsinghua University Beijing
Yue Lu: Beijing University of Technology
Kaibo Zheng: Lund University
Tönu Pullerits: Lund University
Carsten Deibel: Technische Universität Chemnitz
Weidong Xu: Linköping University
Richard Friend: University of Cambridge
Feng Gao: Linköping University

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract Bright and efficient blue emission is key to further development of metal halide perovskite light-emitting diodes. Although modifying bromide/chloride composition is straightforward to achieve blue emission, practical implementation of this strategy has been challenging due to poor colour stability and severe photoluminescence quenching. Both detrimental effects become increasingly prominent in perovskites with the high chloride content needed to produce blue emission. Here, we solve these critical challenges in mixed halide perovskites and demonstrate spectrally stable blue perovskite light-emitting diodes over a wide range of emission wavelengths from 490 to 451 nanometres. The emission colour is directly tuned by modifying the halide composition. Particularly, our blue and deep-blue light-emitting diodes based on three-dimensional perovskites show high EQE values of 11.0% and 5.5% with emission peaks at 477 and 467 nm, respectively. These achievements are enabled by a vapour-assisted crystallization technique, which largely mitigates local compositional heterogeneity and ion migration.

Date: 2021
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/s41467-020-20582-6 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:12:y:2021:i:1:d:10.1038_s41467-020-20582-6

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

DOI: 10.1038/s41467-020-20582-6

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 ().