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24 March 2023 Improved performance of solution processed, multi-stacked OLEDs by interface engineering: NaCl as a charge injection facilitator
Shabnam Ahadzadeh, Rachith S. N. Kumar, Melissa Van Landeghem, Sofie Cambré, Koen Vandewal, Wim Deferme
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Proceedings Volume PC12418, Organic Photonic Materials and Devices XXV; PC1241807 (2023) https://doi.org/10.1117/12.2648754
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
A thin layer of NaCl with a thickness of "~ 3 nm" was deposited on 15 nm ZnO NP+PEIE/ 80 nm SY in an OLED stack. A super thin layer of NaCl acts as a surface modifier increasing the electron injection, current density, external quantum efficiency and finally the overall performance of the OLED. The optical, electrical and morphological properties of OLEDs are enhanced by both solution-processed and vacuum-processed NaCl deposition. Significant enhancement in the EQE and illuminance of the NaCl-based device were exhibited compared with standard devices and are allowed to use because of their abundant availability and nontoxicity for efficient OLEDs.
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Shabnam Ahadzadeh, Rachith S. N. Kumar, Melissa Van Landeghem, Sofie Cambré, Koen Vandewal, and Wim Deferme "Improved performance of solution processed, multi-stacked OLEDs by interface engineering: NaCl as a charge injection facilitator", Proc. SPIE PC12418, Organic Photonic Materials and Devices XXV, PC1241807 (24 March 2023); https://doi.org/10.1117/12.2648754
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KEYWORDS
Organic light emitting diodes
Interfaces
Metals
External quantum efficiency
Dielectrics
Electroluminescence
Laser induced fluorescence
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