As next-generation display technologies, eco-friendly colloidal quantum dot light-emitting diodes have drawn great attention due to their excellent luminescence properties, along with their rapid development. However, practical applications of eco-friendly quantum dot light-emitting device remain challenging, primarily due to the inferior performance of green device, which still lag behind their red and blue counterparts. Herein, we present efficient green device based on interfacial potential-graded ZnSeTe quantum dots. Our findings show that this potential-graded structure alleviates interfacial lattice mismatch and strain, reducing structural deformation and misfit defects. The smoothed interfacial potential suppresses the nonradiative recombination processes, particularly Auger recombination revealed by excitation-intensity dependent ultrafast transient absorption kinetics. Consequently, the interfacial potential-graded quantum dots demonstrate highly efficient green quantum dot light-emitting diodes, with a peak external quantum efficiency of 21.7% at 520 nm and a corresponding current efficiency of 75.7 cd A.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11850856 | PMC |
| http://dx.doi.org/10.1038/s41467-025-57304-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Exploring the Structural Origins of Optically Efficient One-Dimensional Lead Halide Perovskite Nanostructures.
J Am Chem Soc
March 2025
Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States.
Metal halide perovskites have excellent optoelectronic properties. This study aims to determine how the optoelectronic properties of a model perovskite, cesium lead bromide (CsPbBr), change with length and thickness in one dimension (1D). By examining the photophysics of CsPbBr quantum dots (QDs), nanowires (NWs), and nanorods (NRs), we observe the influence of confinement, exciton diffusion, and trapping on their optical properties.
View Article and Find Full Text PDFPET Coordination Mechanism for the Detecting of Environmental Toxic Analytes: Current Approaches and Future Directions.
J Fluoresc
March 2025
Department of English, Easwari Engineering College, Chennai, India.
Fluorescence-based photoinduced electron transfer (PET) has garnered significant attention in the molecular recognition field in recent years because of its unique and desirable photophysical properties. Recent advancements in PET-based chemosensors have demonstrated their potential for real-time monitoring of pollutants such as heavy metals, pesticides, and organic contaminants in various environmental matrices. This review emphasizes the recent advancements in fluorogenic and chromogenic PET-based chemosensors based on Anthracene, Imidazole, Indole, Pyrrole, Thiazole, Naphthalene, Quinoline, Calix[4]arene, Fluorescein, Quantum Dots, Schiff base compounds and also focusing on their molecular design, sensing mechanisms, and photophysical properties reported from the year 2011 to 2024.
View Article and Find Full Text PDFHigh-Performance PbSe Quantum Dots with Palmitoyl Chloride and Their Application to Short-Wavelength Infrared Photodetector Devices.
Small Methods
March 2025
Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea.
Quantum dots (QDs), particularly those in the short-wavelength infrared (SWIR) range, have garnered significant attention for their unique optical and electrical properties resulting from 3D quantum confinement. Among the various chalcogenide-based QDs, lead chalcogenides, such as PbS and PbSe, are extensively studied for infrared photodetection applications. While PbSe QDs offer advantages over PbS, including a narrower bandgap and higher carrier mobility, they suffer from stability issues due to surface oxidation and particle aggregation.
View Article and Find Full Text PDFOptical Nonreciprocity Based on the Four-Wave Mixing Effect in Semiconductor Quantum Dots.
Nanomaterials (Basel)
March 2025
School of Physics, East China University of Science and Technology, Shanghai 200237, China.
Optical nonreciprocity and nonreciprocal devices such as optical diodes have broad and promising applications in various fields, ranging from optical communication to signal process. Here, we propose a magnet-free nonreciprocal scheme based on the four-wave mixing (FWM) effect in semiconductor quantum dots (SQDs). Via controlling the directions of the coupling fields, the probe field can achieve high transmission in the forward direction within a certain frequency range due to the FWM effect.
View Article and Find Full Text PDFFluorescence Quenching of Graphene Quantum Dots from Orange Peel for Methyl Orange Detection.
Nanomaterials (Basel)
February 2025
Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
Methyl orange (MO) is an organic synthetic dye widely used in laboratory and industrial applications. In laboratory settings, it serves as an acid-base indicator due to its distinct color change in both acidic and alkaline environments. Industrially, it is primarily utilized in the textile industry for its ultraviolet (UV) absorption properties.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!