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3 October 2022 Optical manipulation of EQE in top-emitting perovskite LEDs (Conference Presentation)
James C Loy, Barry P Rand
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Proceedings Volume PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; PC122080D (2022) https://doi.org/10.1117/12.2646527
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States
Abstract
Top-emitting LED architectures allow for novel leverages over performance when compared to standard bottom-emitting architectures. In particular, metal-halide perovskite LEDs (PeLEDs) would benefit from increased external quantum efficiency (EQE) through proper microcavity design and an optimized outcoupling layer. We developed a top-emitting stack structure for a MAPbI3 PeLED to study how device performance can be tuned with various dielectric outcoupling layers. We show improvements of at least 2% in EQE compared to a bottom-emitting architecture by using various outcoupling layers in the top-emitting PeLED. We further matched experimental EQE trends to simulation, allowing for predictive assessment of optimal PeLED design.
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James C Loy and Barry P Rand "Optical manipulation of EQE in top-emitting perovskite LEDs (Conference Presentation)", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC122080D (3 October 2022); https://doi.org/10.1117/12.2646527
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KEYWORDS
External quantum efficiency
Light emitting diodes
Perovskite
Optical manipulation
Dielectrics
Optical microcavities
Opacity
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