Publications by authors named "Likuan Zhou"
Article Synopsis
- Next generation QLED displays need better methods for patterning quantum dot layers to improve performance.
- The new CELS technique uses light-activated carbocations to efficiently strip ligands from quantum dots, creating precise microscale patterns while maintaining their luminescence.
- CELS-patterned QLEDs achieve high external quantum efficiencies (up to 19.1% for red) and a long lifespan of 8700 hours at 1000 nits, rivaling traditional devices and showing potential for advanced display technology.
Article Synopsis
- * The existing blue quantum dots achieve high efficiency but suffer from significant surface-bulk coupling, limiting their operational lifespan due to localized charges affecting performance.
- * A novel approach using blue quantum dots with a modified core-shell structure helps reduce this coupling, allowing for a range of emission colors and improved operational lifetimes of 75 to 227 hours, surpassing previous benchmarks.
Angew Chem Int Ed Engl
June 2022
Article Synopsis
- Surface chemistry is key for integrating colloidal nanocrystals (NCs) in optoelectronic devices like displays and sensors, but the role of photochemistry in this process is not fully understood.
- The study highlights how designing nitrene- and carbene-based photocrosslinkers can enhance the patterning capabilities and photophysical characteristics of quantum dots (QDs), crucial for maintaining their luminescent properties.
- The resulting patterned QLEDs achieved an impressive external quantum efficiency of approximately 12% and a lifespan exceeding 4800 hours, suggesting significant advancements in the integration of NCs for high-performance devices.
Article Synopsis
- The study involves the treatment of a compound, [Et4N][Tp*WS3] (1), with various copper halides and phosphine ligands, leading to the formation of several new trinuclear clusters (2-7) characterized by advanced techniques.
- These clusters feature a butterfly-shaped [Tp*WS3Cu2] core, with coordination of copper ions through sulfur and phosphine ligands, resulting in both neutral and cationic structures with diverse connectivity.
- The newly synthesized compounds were analyzed for their structural properties and also tested for their third-order nonlinear optical properties using a femtosecond laser technique, indicating potential applications in photonics.
Article Synopsis
- - The study reports on the reactions of [Et4N][Tp*MoS(S)4] with varying copper halides or [Cu(MeCN)4]ClO4, resulting in new compounds characterized by various analytical methods.
- - The structures of the compounds differ, with some resembling complete or incomplete cubane-like shapes, while others take on binuclear or supercube configurations.
- - The nonlinear optical (NLO) properties of compounds 2-6 were assessed, revealing improved NLO performance compared to the original compound, suggesting potential applications in optical technologies.
