Highly Efficient Perovskite Nanocrystal Light-Emitting Diodes Enabled by a Universal Crosslinking Method

Highly Efficient Perovskite Nanocrystal Light-Emitting Diodes Enabled by a Universal Crosslinking Method

The preparation of highly efficient perovskite nanocrystal light‐emitting diodes is shown. A new trimethylaluminum vapor‐based crosslinking method to render the nanocrystal films insoluble is applied. The resulting near‐complete nanocrystal film coverage, coupled with the natural confinement of inje...

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Veröffentlicht in:Advanced materials (Weinheim) 2016-05, Vol.28 (18), p.3528-3534
Hauptverfasser: Li, Guangru, Rivarola, Florencia Wisnivesky Rocca, Davis, Nathaniel J. L. K., Bai, Sai, Jellicoe, Tom C., de la Peña, Francisco, Hou, Shaocong, Ducati, Caterina, Gao, Feng, Friend, Richard H., Greenham, Neil C., Tan, Zhi-Kuang
Format: Artikel
Sprache:eng
Schlagworte:
Confinement
Crosslinking
Crystals
Electroluminescence
Joining
Light-emitting diodes
nanocrystal
Nanocrystals
passivation
perovskite light-emitting diodes
Perovskites
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Zusammenfassung:The preparation of highly efficient perovskite nanocrystal light‐emitting diodes is shown. A new trimethylaluminum vapor‐based crosslinking method to render the nanocrystal films insoluble is applied. The resulting near‐complete nanocrystal film coverage, coupled with the natural confinement of injected charges within the perovskite crystals, facilitates electron–hole capture and give rise to a remarkable electroluminescence yield of 5.7%.
ISSN:0935-9648
1521-4095
1521-4095
DOI:10.1002/adma.201600064