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High-Performance InP Quantum-Dot Light-Emitting Diodes with a NiO Nanoparticle-Embedded Hybrid Emissive Layer.
ACS Appl Mater Interfaces
January 2025
Department of Electrical and Computer Engineering, Inter-university Semiconductor Research Center, and SOFT Foundry Institute, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
Quantum-dot (QD) light-emitting diodes (QLEDs) are garnering significant attention owing to their superb optoelectrical properties, but the overinjection of electrons compared to holes into the emissive layer (EML) is still a critical obstacle to be resolved. Current approaches, such as inserting a charge-balancing interlayer and mixing p-type organic additives into the EML, face issues of process complexity and poor miscibility. In this work, we demonstrate efficient InP QLEDs by simply embedding NiO nanoparticles (NPs) into the EML which forms a homogeneous QD-metal oxide hybrid EML.
View Article and Find Full Text PDFQuantitative Spectroscopic Analysis of Surface-Reaching Photoexcited Holes in g-CN/TiO Z-Scheme Heterojunctions.
ACS Appl Mater Interfaces
October 2024
Key Laboratory of Functional Molecular Solids Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China.
Article Synopsis
- The Z-scheme heterojunction effectively enhances photocatalytic performance, but there's limited quantitative research on its impact on surface-reaching photoexcited charges.
- This study quantitatively analyzed the concentration of surface-reaching photoholes in g-CN/TiO Z-scheme heterojunctions for the first time, showing that the concentration strongly depends on the g-CN content and interface characteristics.
- The findings reveal that an optimized Z-scheme heterojunction can increase the photohole concentration by almost 1.7 times compared to regular TiO, thanks to a unique charge transfer mechanism involving intrinsic interface defects that trap holes and promote charge separation.
Controllable Iodoplumbate-Coordination of Hybrid Lead Iodide Perovskites via Additive Engineering for High-Performance Solar Cells.
ACS Appl Mater Interfaces
September 2024
Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, P.R. China.
The crystallization and growth of perovskite crystals are two crucial factors influencing the performance of perovskite solar cells (PSCs). Moreover, iodoplumbate complexes such as PbI, PbI, and PbI in perovskite precursor solution dictate both the quality of perovskite crystals and the optoelectrical performance of PSCs. Here, we propose an iodoplumbate-coordination strategy that employs pentafluorophenylsulfonyl chloride (PTFC) as an additive to tailor the crystal quality.
View Article and Find Full Text PDFTime-Resolved Mechanism of Positive Aging in InP Quantum-Dot Light-Emitting Diodes.
ACS Appl Mater Interfaces
September 2024
Nano Device Application Center, Department of Electronic Engineering, Kwangwoon University, Seoul 01897, Republic of Korea.
Article Synopsis
- Positive aging significantly improves the electroluminescence characteristics of quantum-dot light-emitting diodes (QLEDs) by enhancing electron transport and reducing exciton quenching at the interfaces.
- The use of ultraviolet-curable resin in encapsulation helps delay harmful reactions at the aluminum and zinc magnesium oxide interface, leading to better device performance over time.
- The study revealed that after 120 hours, the external quantum efficiency of indium phosphide (InP) QLEDs increased from 3.16% to 12.04%, showcasing the positive aging effect and providing insights into the operating mechanisms of aging agents in QLEDs.
IL1RAP-specific T cell engager depletes acute myeloid leukemia stem cells.
J Hematol Oncol
August 2024
Department of Hematologic Malignancies Translational Science, Gehr Family Center for Leukemia Research, Beckman Research Institute, City of Hope, Duarte, CA, USA.
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- IL1RAP is selectively expressed on AML cells and leukemic stem cells, making it a promising target for treatment without affecting normal blood stem cells.
- BIF002, a novel anti-IL1RAP/CD3 T cell engager, showed strong anti-leukemic effects in laboratory tests and patient samples, significantly activating T cells and leading to the destruction of AML cells.
- In animal models, BIF002 demonstrated a marked reduction in leukemic cells and extended survival rates, with no observable safety issues, indicating its potential effectiveness in treating AML.
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