Is this you? As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
Claim your profile
Articles by Chenghao Bi
Ultra-Low Efficiency Roll-Off High Color Purity Blue Perovskite Quantum Dot LEDs with Exceeding 20% Efficiency
Abstract Blue perovskite quantum dot light-emitting diodes (QLEDs) are highly attractive for new generation high-definition displays, but their practical deployment is hindered by severe efficiency roll-off at high brightness (>4000 cd m−²) while maintaining high color purity (CIEy < 0.1). This roll-off arises mainly from non-radiative losses induced by exposed dangling bonds, strong inter-dot coupling, and low permittivity.
Highly Efficient and Stable CsPbI3 Perovskite Quantum Dots Light‐Emitting Diodes Through Synergistic Effect of Halide‐Rich Modulation and Lattice Repair
Conflict of Interest The authors declare no conflict of interest. Supporting Information Filename Description smll202409630-sup-0001-SuppMat.docx3.1 MB Supporting Information References 1a) , , , , , , , , Science 2016, 354, 92; b) , , , , , , , , , , Nature 2021, 591, 72; c) , , , , , , , , , Science 2022, 377, 307; d) , , , , , , , , , , Science 2019, 365, 591; e) , , , , , , , Nat. Energy 2023, 8, 989; f) , , , , , , , , , Nat. Commun. 2024, 15, 5696; g) , , , , , , , , Nat. Mater.
Near‐Infrared Light Emitting Metal Halides: Materials, Mechanisms, and Applications
Near-Infrared (NIR) light emitting metal halides are emerging as a new generation of optical materials owing to their appealing features, which include low-cost synthesis, solution processability and adjustable optical properties. NIR emitting perovskite-based light-emitting diodes (LEDs) have reached an external quantum efficiency (EQE) over 20% and a device stability of over 10,000 h. Such results have sparked an interest in exploring new NIR metal halide emitters.
High-Efficiency Pure-Red CsPbI3 Quantum Dot Light-Emitting Diodes Enabled by Strongly Electrostatic Potential Solvent and Sequential Ligand Post-treatment Process
Download Hi-Res ImageDownload to MS-PowerPointCite This:Nano Lett. 2024, XXXX, XXX Terms & Conditions Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses).
Suppressing Ion Migration of Mixed‐Halide Perovskite Quantum Dots for High Efficiency Pure‐Red Light‐Emitting Diodes
Abstract Perovskite-based light-emitting diodes (PeLEDs) with a mixed halide composition can be used to obtain the “pure red” emission, i.e., in the 620–650 nm range, required for high-definition displays. However, fast halide ion migration induces phase separation in these materials under electric fields, resulting in poor spectral stability and low efficiency. Herein, a method for producing mixed halide CsPbI3-xBrx quantum dots (QDs) is reported in which ion migration is suppressed.
Water‐Driven Synthesis of Deep‐Blue Perovskite Colloidal Quantum Wells for Electroluminescent Devices
Graphical Abstract A creatively water-driven strategy is devised to obtain size-homogenized and strongly confined deep-blue perovskite quantum wells (QWs) with remarkable stability and high photoluminescence quantum yield of 94 %. The electroluminescent devices based on the QWs show high luminance of 2946 cd m−2, demonstrating state-of-the-art brightness for perovskite QWs based devices.
Magnetic microbot somersaults through the colon to deliver drugs
Using tiny robots to deliver drugs is promising pathway when it comes to limiting side effects and increasing effectiveness, and some take a more theatrical approach than others. Scientists at Purdue University have come to the party with a back-flipping microbot that can tumble its way through the colon to release its payload when desired, all while being controlled externally by a magnetic field.
Tumbling Microrobots for Future Medicine
One day, a visit to the hospital with a serious illness could end not with surgery or bottles of pills, but with an injection of medical microrobots. In the broadest sense, microrobots are simply microscopic-scale automated machines designed to perform selected movements in response to specific stimuli—but their tiny size means that they could travel through the body to perform tasks that no conventional robot could do.
Show More
loading
Actions
Is this you?
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.Get in touch with Chenghao
Contact Chenghao, search articles and posts on X, monitor coverage, and track replies from one place.
Learn more about Muck Rack