Visible-to-UV Photon Upconversion Sensitized by Lead Halide Perovskite Nanocrystals

Visible-to-UV Photon Upconversion Sensitized by Lead Halide Perovskite Nanocrystals

Visible-to-UV photon upconversion based on triplet-triplet annihilation (TTA-UC) sensitized by lead halide perovskite nanocrystals is demonstrated for the first time. The surface modification of nanocrystals with energy transmitter ligands plays a key role in the effective triplet sensitization, res...

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Veröffentlicht in:Chemistry letters 2019-11, Vol.48 (11), p.1347-1350
Hauptverfasser: Okumura, Keisuke, Yanai, Nobuhiro, Kimizuka, Nobuo
Format: Artikel
Sprache:eng
Schlagworte:
Coordination Asymmetry
Lead compounds
Metal halides
Nanocrystals
Perovskites
Photons
Upconversion
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Zusammenfassung:Visible-to-UV photon upconversion based on triplet-triplet annihilation (TTA-UC) sensitized by lead halide perovskite nanocrystals is demonstrated for the first time. The surface modification of nanocrystals with energy transmitter ligands plays a key role in the effective triplet sensitization, resulting in high TTA-UC efficiency over 4%. This work proves the promising potential of perovskite nanocrystals as a versatile, next-generation triplet sensitizer.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.190473