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

Karlsson, Max (author)
Linköpings universitet,Linköping University,Elektroniska och fotoniska material,Tekniska fakulteten
Yi, Ziyue (author)
Linköpings universitet,Linköping University,University of Cambridge: Cavendish Laboratory,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Univ Cambridge, England
Reichert, Sebastian (author)
Chemnitz University of Technology,Tech Univ Chemnitz, Germany
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Luo, Xiyu (author)
Linköpings universitet,Linköping University,Tsinghua University,Elektroniska och fotoniska material,Tekniska fakulteten,Tsinghua Univ Beijing, Peoples R China
Lin, Weihua (author)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Sweden
Zhang, Zeyu (author)
Beijing University of Technology,Beijing Univ Technol, Peoples R China
Bao, Chunxiong (author)
Linköpings universitet,Linköping University,Elektroniska och fotoniska material,Tekniska fakulteten
Zhang, Rui (author)
Linköpings universitet,Linköping University,Elektroniska och fotoniska material,Tekniska fakulteten
Bai, Sai (author)
Linköpings universitet,Linköping University,Elektroniska och fotoniska material,Tekniska fakulteten
Zheng, Guanhaojie (author)
Linköpings universitet,Linköping University,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
Teng, Pengpeng (author)
Linköpings universitet,Linköping University,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
Duan, Lian (author)
Tsinghua University,Tsinghua Univ Beijing, Peoples R China
Lu, Yue (author)
Beijing University of Technology,Beijing Univ Technol, Peoples R China
Zheng, Kaibo (author)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Technical University of Denmark,Lund Univ, Sweden; Tech Univ Denmark, Denmark
Pullerits, Tönu (author)
Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Sweden
Deibel, Carsten (author)
Chemnitz University of Technology,Tech Univ Chemnitz, Germany
Xu, Weidong (author)
Linköpings universitet,Linköping University,Elektroniska och fotoniska material,Tekniska fakulteten
Friend, Richard (author)
University of Cambridge: Cavendish Laboratory,Univ Cambridge, England
Gao, Feng (author)
Linköpings universitet,Linköping University,Elektroniska och fotoniska material,Tekniska fakulteten
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 (creator_code:org_t)
2021-01-13
2021
English.
In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 12:1
Related links:
http://dx.doi.org/10... (free)
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https://www.nature.c...
https://liu.diva-por... (primary) (Raw object)
https://lup.lub.lu.s...
https://doi.org/10.1...
https://urn.kb.se/re...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)
NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

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