Boosting Stability and Inkjet Printability of Pure-Red CsPb(Br/I)3 Quantum Dots through Dual-Shell Encapsulation for Micro-LED Displays
Source abstract
Abstract
The development of pure-red perovskite quantum dots (QDs) for displays is lagging due to their structural instability. Herein, we present a new core dual-shell structure with CsPb(Br/I) 3 @SiO 2 @polystyrene (PS) QDs, emitting at 627 nm. The structure consists of a CsPb(Br/I) 3 core, an intermediate SiO 2 layer, and an outermost PS shell. The PS shell plays a crucial role in silane hydrolysis, preventing SiO 2 aggregation and enhancing the dispersibility of the CsPb(Br/I) 3 @SiO 2 @PS QDs. These QDs exhibit enhanced resilience against irradiation, moisture, and thermal stress, maintaining approximately 80% of their initial photoluminescence (PL) intensity after 3 days of UV irradiation exposure or after 2 days of being subject to high humidity and temperature conditions. Utilized as red inkjet inks, these QDs enable the inkjet printing of a vivid red dot matrix and a Chinese chess pattern. This innovation holds promise for expanding the practical utilization of CsPb(Br/I) 3 QDs, particularly in full-color micro-LED display technology via inkjet printing.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341000, P.R. China
Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Research Center of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, P.R. China
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian 350108, P.R. China
Funding
Natural Science Foundation of Xiamen Municipality · Science and Technology Projects of Fujian Province · Mindu Innovation Laboratory
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