Remaining challenges towards high brightness perovskite laser diodes

Robert Gehlhaar; Karim Elkhouly; Iakov Goldberg; Nirav Annavarapu; Sarah Hamdad; Jan Genoe; Paul Heremans

doi:10.1117/12.3027763

30 September 2024 Remaining challenges towards high brightness perovskite laser diodes

Robert Gehlhaar, Karim Elkhouly, Iakov Goldberg, Nirav Annavarapu, Sarah Hamdad, Jan Genoe, Paul Heremans

Proceedings Volume 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII; 131220C (2024) https://doi.org/10.1117/12.3027763
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States

Abstract

We are giving an overview of our work on ultrabright perovskite LEDs with the ultimate goal of injection lasing. Starting from the analysis of perovskite films in standard LED configurations, we can already identify beneficial operation conditions as cryogenic cooling and short electrical pulsing. By downscaling the active area of these devices, we reach current densities multiple kA/cm2 approaching the range expected to reach inversion in the recombination zone. In experiments combining nanosecond laser pulses of optical pumping and sub-microsecond electrical pulses of high voltages, we have been able to demonstrate the contribution of injected carriers to the overall net gain in a PeLED. In parallel, we have optimized distributed feedback resonators for perovskite lasers and their possible integration in light emitting diodes. The combination of the opto-electrical analyses enables us to sketch a possible route towards a perovskite injection laser.

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Citation Download Citation

Robert Gehlhaar, Karim Elkhouly, Iakov Goldberg, Nirav Annavarapu, Sarah Hamdad, Jan Genoe, and Paul Heremans "Remaining challenges towards high brightness perovskite laser diodes", Proc. SPIE 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII, 131220C (30 September 2024); https://doi.org/10.1117/12.3027763

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KEYWORDS

Perovskite

Semiconductor lasers

Laser resonators

Thin films

Chemical composition

Design

Light emitting diodes

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