Kar Wei Ng
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View article: Mg-Incorporated Nickel Oxide Hole Injection Layer for Stable and Efficient Quantum Dot Light-Emitting Diodes
Mg-Incorporated Nickel Oxide Hole Injection Layer for Stable and Efficient Quantum Dot Light-Emitting Diodes Open
High-quality hole injection layers (HILs) are essential for efficient and stable quantum dot light-emitting diodes (QLEDs). While NiOx is a stable alternative to the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) HIL, …
View article: Hole Injection Barrier‐Driven Positive Aging Mechanism in Inverted QLEDs
Hole Injection Barrier‐Driven Positive Aging Mechanism in Inverted QLEDs Open
Positive aging is usually observed during the operation of quantum dot‐light‐emitting diodes (QLEDs), which introduces significant challenges for accurate performance assessment and industrial standardization. However, the mechanism of pos…
View article: Improved Hole Injection by Enhancing Electron Extraction of Solution-Processed MoO<sub><i>x</i></sub> in Quantum Dot Light-Emitting Diodes
Improved Hole Injection by Enhancing Electron Extraction of Solution-Processed MoO<sub><i>x</i></sub> in Quantum Dot Light-Emitting Diodes Open
Hole injection layers (HILs) are pivotal for the performance of quantum dot light-emitting diodes (QLEDs), with solution-processed inorganic HIL materials being a primary means for the commercial application of QLEDs. Transition metal oxid…
View article: Efficient Hole Injection From Indium Tin Oxide in Quantum‐Dot Light‐Emitting Diodes
Efficient Hole Injection From Indium Tin Oxide in Quantum‐Dot Light‐Emitting Diodes Open
PEDOT:PSS thin film is commonly used as a hole injection layer (HIL) in quantum‐dot light‐emitting diodes (QLEDs). However, the realization of QLEDs‐based displays remains challenging due to the complex effects of acidic surfaces on device…
View article: Eco-friendly quantum-dot light-emitting diode display technologies: prospects and challenges
Eco-friendly quantum-dot light-emitting diode display technologies: prospects and challenges Open
Eco-friendly quantum-dot light-emitting diodes (QLEDs), which employ colloidal quantum dots (QDs) such as InP, and ZnSe, stand out due to their low toxicity, color purity, and high efficiency. Currently, significant advancements have been …
View article: Atomic Layer-Deposited Silane Coupling Agent for Interface Passivation of Quantum Dot Light-Emitting Diodes
Atomic Layer-Deposited Silane Coupling Agent for Interface Passivation of Quantum Dot Light-Emitting Diodes Open
Inserting an insulating layer between the charge transport layer (CTL) and quantum dot emitting layer (QDL) is widely used in improving the performance of quantum dot light-emitting diodes (QLEDs). However, the additional layer inevitably …
View article: Ultrathin Niobium‐Doped Indium Oxide Active Layer Enables High‐Performance Phototransistors for Driving Quantum‐Dot Light‐Emitting Diodes
Ultrathin Niobium‐Doped Indium Oxide Active Layer Enables High‐Performance Phototransistors for Driving Quantum‐Dot Light‐Emitting Diodes Open
Active materials play a crucial role in the performance of phototransistors. However, the discovery of a novel and versatile active material is a big challenge. For the first time, phototransistors with ultrathin niobium‐doped indium oxide…
View article: Water‐Assisted Synthesis of Layer‐Controlled CsPbBr<sub>3</sub> Nanoplates Spontaneously Encapsulated in PbBr(OH)
Water‐Assisted Synthesis of Layer‐Controlled CsPbBr<sub>3</sub> Nanoplates Spontaneously Encapsulated in PbBr(OH) Open
CsPbBr 3 nanoplates (NPs) have shown great potential in diverse optoelectronic applications. Despite the wonderful luminescence properties, the inherent instability of these NPs hinders their use in practical situations. Herein, a facile w…
View article: Bi‐Functional Chelating Ligand Enables Ultra‐Stable Blue Emissive CsPbBr<sub>3</sub> Nanoplatelets Film
Bi‐Functional Chelating Ligand Enables Ultra‐Stable Blue Emissive CsPbBr<sub>3</sub> Nanoplatelets Film Open
Quantum‐confined perovskite CsPbBr 3 Nanoplatelets (NPLs) have recently emerged as promising blue‐emitting materials for perovskite light‐emitting diodes (PeLEDs). Yet, their susceptibility to optical instability in solid films under ambie…
View article: Air-Stable Self-Driven UV Photodetectors on Controllable Lead-Free CsCu<sub>2</sub>I<sub>3</sub> Microwire Arrays
Air-Stable Self-Driven UV Photodetectors on Controllable Lead-Free CsCu<sub>2</sub>I<sub>3</sub> Microwire Arrays Open
The rapid evolution of the Internet of Things has engendered increased requirements for low-cost, self-powered UV photodetectors. Herein, high-performance self-driven UV photodetectors are fabricated by designing asymmetric metal-semicondu…
View article: Electronic and magnetic properties of layered M<sub>3</sub>Si<sub>2</sub>Te<sub>6</sub> (M = alkaline earth and transition metals)
Electronic and magnetic properties of layered M<sub>3</sub>Si<sub>2</sub>Te<sub>6</sub> (M = alkaline earth and transition metals) Open
Recently, a new layered material, Mn 3 Si 2 Te 6 , was identified to be a semiconductor with nodal-line topological property and ferrimagnetic ground state. In this work, we propose a series of structures, M 3 Si 2 Te 6 (M = alkaline earth…
View article: Photosensitive Dielectric 2D Perovskite Based Photodetector for Dual Wavelength Demultiplexing
Photosensitive Dielectric 2D Perovskite Based Photodetector for Dual Wavelength Demultiplexing Open
Stacked 2D perovskites provide more possibilities for next generation photodetector with more new features. Compared with its excellent optoelectronic properties, the good dielectric performance of metal halide perovskite rarely comes into…
View article: Impact of Vehicle Light on Physical Properties of Particulate Matters Emitted from Vehicles
Impact of Vehicle Light on Physical Properties of Particulate Matters Emitted from Vehicles Open
Gasoline and diesel vehicles are one of the main sources of PMs generation which are harmful to human health and the environment. The light emitted from the headlights of these vehicles may cause to make the PMs more/less/not dangerous tha…
View article: Close-loop recycling of perovskite solar cells through dissolution-recrystallization of perovskite by butylamine
Close-loop recycling of perovskite solar cells through dissolution-recrystallization of perovskite by butylamine Open
Organic-inorganic lead halide perovskite solar cells (PSCs) have achieved impressive progress in both conversion efficiency and stability. However, the leakage risk of toxic lead in the fabrication and service of PSCs hinders their commerc…
View article: Sensitive and Low-Power Metal Oxide Gas Sensors with a Low-Cost Microelectromechanical Heater
Sensitive and Low-Power Metal Oxide Gas Sensors with a Low-Cost Microelectromechanical Heater Open
In this study, a simple and cost-effective metal oxide semiconductor (MOS) gas sensor, which can be fabricated utilizing only two photolithography steps, was designed and developed through the planar microelectromechanical systems (MEMS) t…
View article: Unveiling the Origin of Catalytic Sites of Pt Nanoparticles Decorated on Oxygen-Deficient Vanadium-Doped Cobalt Hydroxide Nanosheet for Hybrid Sodium–Air Batteries
Unveiling the Origin of Catalytic Sites of Pt Nanoparticles Decorated on Oxygen-Deficient Vanadium-Doped Cobalt Hydroxide Nanosheet for Hybrid Sodium–Air Batteries Open
Highly active bifunctional electrocatalysts are crucial for improving the performance of rechargeable metal-air batteries. However, most reported bifunctional electrocatalysts feature poor electrocatalytic activity and stability toward oxy…
View article: Ultra-thin curved visible microdisk lasers with three-dimensional whispering gallery modes
Ultra-thin curved visible microdisk lasers with three-dimensional whispering gallery modes Open
Microdisk lasers are important components in photonic integrated circuits (PICs), of which the whispering gallery modes (WGMs) are usually confined within a two-dimensional (2D) planar slab. Here, owing to the strain relaxation of quantum …
View article: Homogeneous Core/Shell NiMoO4@NiMoO4 and Activated Carbon for High Performance Asymmetric Supercapacitor
Homogeneous Core/Shell NiMoO4@NiMoO4 and Activated Carbon for High Performance Asymmetric Supercapacitor Open
Here, we report the extraordinary electrochemical energy storage capability of NiMoO4@NiMoO4 homogeneous hierarchical nanosheet-on-nanowire arrays (SOWAs), synthesized on nickel substrate by a two-stage hydrothermal process. Comparatively …