Quantum Dot downconverters can provide a scalable solution to tri‐color high‐resolution microLED and OLED displays by converting monochrome displays using photopatternable red and green QDs. Using internal measurements collected at NanoPattern Technologies, Inc. we model and discuss the practical wall plug efficiencies for downconverted InGaN blue microLED displays. In the range of 5 μm pixel sizes, using uncorrected 65 % film PLQY, the downconverted InGaN red emitter achieves a comparable external quantum efficiency compared to a direct red emitting AlInGaP when compared at practical current densities for microLED drivers.
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Thin Film Photopatternable Quantum Dot Downconverters with High Optical Density
We demonstrate a scalable fabrication method for microLED displays using photopatternable InP-based QDs. Using photosensitive ligands, we demonstrate pixel resolutions of 10 μm with EQE of >40% in <10 μm thickness. Accelerated reliability is measured and modeled to calculate an expected lifetime of >10k hours for direct-view microLED operating conditions.
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- Award ID(s):
- 2052728
- PAR ID:
- 10656276
- Publisher / Repository:
- INTERNATIONAL DISPLAY WORKSHOPS
- Date Published:
- Journal Name:
- Proceedings of the International Display Workshops
- ISSN:
- 1883-2490
- Page Range / eLocation ID:
- 333
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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