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Aiming at next‐generation displays, high‐resolution quantum dot light‐emitting diodes (QLEDs) with high efficiency and transparency are highly desired. However, there is limited study involving the improvements of QLED pixel resolution, efficiency, and transparency simultaneously, which undoubtedly restricts the practical applications of QLED for next‐generation displays. Here, the strategy of electrostatic...
Metal halide perovskite quantum dots (QDs) and polymer composite films have witnessed extensive investigation in flexible optoelectronic devices, while the unsatisfactory environmental and mechanical properties of the composite films set substantial limitations for practical applications. Herein, highly luminescent perovskite QDs‐polymer composite films (QPFs) are fabricated with remarkable environmental...
In Situ Crystallization
In article number 2107452, Song Chen, Yu Chen, and co‐workers report a strategy for in‐situ crystallization of CsPbBr3 nanocrystals within silica nanospheres by a carefully designed, multistep, high‐temperature treatment. The image presents the well‐protected CsPbBr3 nanocrystals with excellent thermal stability, referencing the Chinese traditional story of “Bagua furnace alchemy...
Although all‐inorganic perovskite materials present multiple fascinating optical properties, their poor stability undermines their potential application in the field of multi‐color display. Herein, spatially confined CsPbBr3 nanocrystals are in situ crystallized within uniform mesoporous SiO2 nanospheres (MSNs) to regulate their size distribution, passivate their surface defects, shield them from...
The disordered dendritic growth of Li metal seriously hampers the practical application of lithium metal batteries. Great efforts are devoted to suppress the growth of dendrites, it is still necessary to explore measures of controlling dendritic growth and pave ways for normal cell operation in presence of dendrites. Herein, a modification technique of Li metal anode by a periodic Ni mesh with micrometer‐sized...
Sodium dendrite growth is responsible for short circuiting and fire hazard of metal batteries, which limits the potential application of sodium metal anode. Sodium dendrite can be effectively suppressed by applying mechanically robust electrolyte in battery systems. Herein, a composite gel polymer electrolyte (GPE) is designed and fabricated, mainly consisting of graphene oxide (GO) and polyvinylidene...
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