The trade-off between efficiency and stability in Mn2+ doped perovskite light-emitting diodes

Sebastian Fernandez; William Michaels; Manchen Hu; Pournima Narayanan; Natalia Murrietta; Arynn O. Gallegos; Ghada H. Ahmed; Junrui Lyu; Mahesh Gangishetty; Daniel N. Congreve

doi:10.1117/12.2670619

6 October 2023 The trade-off between efficiency and stability in Mn2+ doped perovskite light-emitting diodes

Sebastian Fernandez, William Michaels, Manchen Hu, Pournima Narayanan, Natalia Murrietta, Arynn O. Gallegos, Ghada H. Ahmed, Junrui Lyu, Mahesh Gangishetty, Daniel N. Congreve

Author Affiliations +

Proceedings Volume PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII; PC126590Y (2023) https://doi.org/10.1117/12.2670619
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Conference Poster

Abstract

In this work, we dope Mn2+ ions into an organic-inorganic hybrid quasi-bulk 3D perovskite with the addition of tris(4-fluorophenyl)phosphine oxide (TFPPO) dissolved in a chloroform antisolvent to achieve green perovskite LEDs (PeLEDs) with a 14.0% EQE and a 128,000 cd/m2 peak luminance. While TFPPO dramatically increases the PeLEDs’ EQE, the operational stability is compromised. At 5mA/cm2, our PeLED fabricated with a pure chloroform antisolvent (EQE=2.97%) decays to half of its maximum luminance in 37.0 minutes. Alternatively, our PeLED fabricated with TFPPO (EQE=14.0%) decays in 2.54 minutes. Consequently, we studied both photophysical and optoelectronic characteristics before and after PeLED electrical degradation.

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Sebastian Fernandez, William Michaels, Manchen Hu, Pournima Narayanan, Natalia Murrietta, Arynn O. Gallegos, Ghada H. Ahmed, Junrui Lyu, Mahesh Gangishetty, and Daniel N. Congreve "The trade-off between efficiency and stability in Mn2+ doped perovskite light-emitting diodes", Proc. SPIE PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII, PC126590Y (6 October 2023); https://doi.org/10.1117/12.2670619

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