DOI: https://doi.org/10.29363/nanoge.almips.2021.017
Publication date: 23rd September 2021
Perovskite LEDs are an exploding field, with high performance red and green devices demonstrated by many groups. Blue LEDs, however, have lagged significantly behind these two colors in both efficiency and stability. Here, we identify material and device improvements that allow these blue materials to be more competitive with their red and green cousins. We demonstrate that the addition of a small amount of a Mn dopant improves the photoluminescence efficiency by a factor of 3, an improvement that translates directly to blue and white devices, leading to efficiency and stability enhancements. Finally, we will detail recent measurements into the source of this improvement.
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