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Non-doped deep blue emitters based on twisted phenanthroimidazole derivatives for organic light-emitting devices (CIE y ≈ 0.04)

Abstract

The π-conjugation length of the donor–acceptor molecule is not conducive to blue emission and the color purity of the devices. Hence, by using twisted donor–acceptor molecular design, we developed three deep-blue emitters, mtp, Tmtp and Cmtp. Compared to TPA-BPI we reported previously, the subtle molecular modification and optimization shows extremely good color purity without impairing the excellent photophysical and electrical properties. The nondoped mtp-based device emitted deep-blue emission of at 436 nm with CIE (0.15, 0.05), and a maximum EQE of 3.89%. The Cmtp-based device emitted blue light of at 445 nm with CIE (0.15, 0.07). Especially, the Tmtp-based device showed a violet-ble CIE coordinate of (0.15, 0.04).

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Publication details

The article was received on 14 Jan 2017, accepted on 10 May 2017 and first published on 10 May 2017


Article type: Paper
DOI: 10.1039/C7NJ00155J
Citation: New J. Chem., 2017, Accepted Manuscript
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    Non-doped deep blue emitters based on twisted phenanthroimidazole derivatives for organic light-emitting devices (CIE y ≈ 0.04)

    G. Li, J. Zhao, D. Zhang, J. Zhu, Z. Shi, S. Tao, F. Lu and Q. Tong, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00155J

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