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High color purity blue quantum dot light‐emitting diodes (QLEDs) have great potential applications in the field of ultra‐high‐definition display. However, the realization of eco‐friendly pure‐blue QLEDs with a narrow emission linewidth for high color purity remains a significant challenge. Herein, a strategy for fabricating high color purity and efficient pure‐blue QLEDs based on ZnSeTe/ZnSe/ZnS quantum...
ZnSeTe Quantum Dots
In article number 2303247, Jialong Zhao, Sheng Cao, Yunjun Wang, and co‐workers propose a strategy for fabricating high‐color purity and high‐efficiency pure blue quantum dot (QD) light‐emitting diodes (QLEDs) using eco‐friendly ZnSeTe/ZnSe/ZnS QDs. Precisely controlling the internal ZnSe shell thickness could weaken the exciton‐ longitudinal optical (LO) phonon coupling strength...
Introducing heteroatoms into atomically dispersed Fe–N4 sites with symmetric electron distribution can adjust the imperfect oxygenated adsorption‐activation and promote oxygen reduction reaction (ORR) activity. However, the relevant design synthesis and deeply understanding the electrocatalytic mechanism of such an asymmetric structure by introducing Fe–C coordination remains challenging. Herein,...
Photodynamic therapy (PDT) with organic photosensitizers generally goes through the oxygen‐dependent process, generating singlet oxygen and/or superoxide anion. However, the generation of reactive oxygen species is often suppressed as a result of hypoxia, one of the common features in tumors, therefore limiting the effectiveness of the tumor treatments. Consequently, it is urgent and significant to...
In article number 1900578, Zhiming M. Wang, Jun Lou, Yu‐Lun Chueh, and co‐workers review synthesis methods, phase transitions, and tunable optical properties for the rational design of MoS2 photocatalytic systems. Moreover, photocatalytic enhancements of plasmon‐assisted MoS2 are also reviewed to further explore the prospects for MoS2 as a cocatalyst and a photocatalyst.
Ultrathin 2D molybdenum disulfide (MoS2), which is the flagship of 2D transition‐metal dichalcogenide nanomaterials, has drawn much attention in the last few years. 2D MoS2 has been banked as an alternative to platinum for highly active hydrogen evolution reaction because of its low cost, high surface‐to‐volume ratio, and abundant active sites. However, when MoS2 is used directly as a photocatalyst,...
To keep pace with the increasing pursuit of portable and wearable electronics, it is urgent to develop advanced flexible power supplies. In this context, Zn‐ion batteries (ZIBs) have garnered increasing attention as favorable energy storage devices for flexible electronics, owing to the high capacity, low cost, abundant resources, high safety, and eco‐friendliness. Extensive efforts have been devoted...
The phase mode atomic force microscopy (AFM) lithography and monolayer lift‐off process are combined to fabricate electronics based on 2D materials (2DMs), which remove the need for pre‐fabricating markers and increase the accuracy of the overlay and alignment. The promising phase mode of AFM lithography eliminates the drawbacks of the conventional force mode such as the over‐cut, under‐cut, debris...
In article number 1803273, Lianqing Liu and co‐workers propose a unique mask‐free and marker‐free lithography technique to fabricate a sub‐micrometer‐sized 2D material thin‐film transistor using the phase mode of atomic force microscopy. This method does not change the chemical, physical, and electrical properties of 2D materials. It offers a flexible, easy, effective, and low‐cost way to fabricate...
Development of efficient and durable non‐Pt catalysts for hydrogen evolution reaction (HER) in acid media is highly desirable. Iron nitride has emerged as a promising catalyst for its cost‐effective nature, but the corresponding acidic stability must be promoted. Herein, phosphorus‐decorated Fe2N and reduced graphene oxide (P‐Fe2N/rGO) composite are designed and synthesized. X‐ray photoelectron spectroscopy...
Tungsten ditelluride (WTe2) is a semimetal with orthorhombic Td phase that possesses some unique properties such as Weyl semimetal states, pressure‐induced superconductivity, and giant magnetoresistance. Here, the high‐pressure properties of WTe2 single crystals are investigated by Raman microspectroscopy and ab initio calculations. WTe2 shows strong plane‐parallel/plane‐vertical vibrational anisotropy,...
The novel application of two‐dimensional (2D) single‐layer ternary chalcogenide nanosheets as “capture‐release” fluorescence‐based biomolecular nanosensors is demonstrated. Fluorescently labeled biomolecular probe is first captured by the ultrathin Ta2NiS5 nanosheets and then released upon adding analyte containing a target biomolecule due to the higher probe‐target affinity. Here, the authors use...
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