OLED Structure Optimization for Pure and Efficient NIR Electroluminescence of Nd3+ Complexes Bearing Fluorinated 1,3-Diketones

Daria A Metlina; Dmitry O Goryachii; Mikhail T Metlin; Lyudmila V Mikhalchenko; Vladislav M Korshunov; Ilya V Taydakov

doi:10.3390/ma16031243

OLED Structure Optimization for Pure and Efficient NIR Electroluminescence of Nd³⁺ Complexes Bearing Fluorinated 1,3-Diketones

Materials (Basel). 2023 Feb 1;16(3):1243. doi: 10.3390/ma16031243.

Authors

Daria A Metlina¹, Dmitry O Goryachii¹, Mikhail T Metlin¹, Lyudmila V Mikhalchenko², Vladislav M Korshunov¹, Ilya V Taydakov^{1

3}

Affiliations

¹ P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninsky Prospect, 119991 Moscow, Russia.
² N.D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia.
³ G.V. Plekhanov Russian University of Economics, 36 Stremyanny per., 117997 Moscow, Russia.

Abstract

NIR emitting OLEDs (organic light-emitting diodes) with high photoluminescence quantum yields were developed on the basis of fluorinated 1,3-diketonate coordination compounds of the Nd³⁺ ion. Both thermal evaporation and spin-coating techniques were successfully employed for active layer deposition resulting in electroluminescence quantum yields up to 1.38·10^-2%. Blueish-green emission from exciplex and electroplax formations was almost suppressed with the topology optimization of the cell.

Keywords: 1,3-diketone; NIR OLED; coordination compounds; electroluminescence; neodymium.

Grants and funding

19-13-00272/Russian Science Foundation