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3 October 2022 The influence of charge transport layers on the EL stability of QDLEDs (Conference Presentation)
Dong Seob Chung, Tyler Davidson-Hall, Atefeh Ghorbani Koltapeh, Mohsen Azadinia, Hany Aziz
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Proceedings Volume PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI; PC122080J (2022) https://doi.org/10.1117/12.2638019
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States
Abstract
Colloidal quantum dot (QD)-based light emitting devices are poised to become the leading technology in next generation flat panel displays but their electroluminescent (EL) stability is still insufficient for commercial applications. We recently found that using a cascaded hole transport layer (HTL) structure can lead to significant EL stability enhancements, prolonging device EL lifetime by 25 times. Introducing modifications to the ZnO electron transport layer can lead to similar benefits. Investigations show that the stability enhancement in both cases is associated with a better management of charge and exciton distributions in the HTL. Results from these investigations will be discussed.
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Dong Seob Chung, Tyler Davidson-Hall, Atefeh Ghorbani Koltapeh, Mohsen Azadinia, and Hany Aziz "The influence of charge transport layers on the EL stability of QDLEDs (Conference Presentation)", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC122080J (3 October 2022); https://doi.org/10.1117/12.2638019
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KEYWORDS
Electroluminescence
Quantum dot displays
Excitons
Doping
Electron transport
Flat panel displays
Luminescence
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