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3 October 2019 The crucial role of surface ligands on the properties of thin CdSe/ZnS/CdS/ZnS QD-films for QDLEDs
Mariya A. Zvaigzne, Alexey E. Alexandrov, Pavel S. Samokhvalov
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Proceedings Volume 11207, Fourth International Conference on Applications of Optics and Photonics; 112072B (2019) https://doi.org/10.1117/12.2530255
Event: IV International Conference on Applications of Optics and Photonics (AOP 2019), 2019, Lisbon, Portugal
Abstract
We report on the effects of surface organic ligands on the properties of CdSe/ZnS/CdS/ZnS quantum dot (QD) solutions and condensed films. Hexadecylamine, octylamine, hexadecanethiol, octanethiol, thiophenol and inorganic ZnCl2 were used as the QD surface ligands affecting their properties. Here, we analyze optical and electrical properties as well as surface quality of thin films fabricated from the QDs bearing different ligands on their surfaces. We have found that the use of thiol ligands results in QD-films with a uniform surface, sufficient quantum yield and resistance, thus approving their relevance for the use as electroluminescent layers in light emitting diodes.
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Mariya A. Zvaigzne, Alexey E. Alexandrov, and Pavel S. Samokhvalov "The crucial role of surface ligands on the properties of thin CdSe/ZnS/CdS/ZnS QD-films for QDLEDs", Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 112072B (3 October 2019); https://doi.org/10.1117/12.2530255
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KEYWORDS
Luminescence
Quantum dots
Thin films
Light emitting diodes
Quantum efficiency
Nanocrystals
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