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Chem Commun (Camb). 2015 Feb 21;51(15):3181-4. doi: 10.1039/c4cc09403d.

Zinc complexes exhibiting highly efficient thermally activated delayed fluorescence and their application to organic light-emitting diodes.

Chemical communications (Cambridge, England)

Yumi Sakai, Yuta Sagara, Hiroko Nomura, Nozomi Nakamura, Yoshitake Suzuki, Hiroshi Miyazaki, Chihaya Adachi

Affiliations

  1. Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan. [email protected].

PMID: 25605520 DOI: 10.1039/c4cc09403d

Abstract

Metal complexes emitting thermally activated delayed fluorescence based on intra-ligand charge transfer and enhanced by metallization were synthesized. Organic light-emitting diodes using a thermally stable zinc complex processed by vacuum vapor deposition achieved an external quantum efficiency of nearly 20%.

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