Ruthenium-Doped InP Quantum Dots for Efficient Red Emission
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide The synthesis of various transition-metal-doped InP quantum dots (QDs), such as copper, manganese, and silver, for enhanced optoelectronic properties has been reported to date. Herein, we introduce ruthenium (Ru) doping into InP QDs. After Ru doping, InP QDs showed a significant red shift up to 325 meV due to the introduction of mid-gap states. The optimization studies of the ZnS shell formation on Ru-doped InP core QDs led to a high photoluminescence quantum yield (PLQY) of 77.6% in the red spectral region, while without ruthenium doping the PLQY reached a maximum level around 60% via the same synthetic approach. Elemental mapping, mass spectrometry, and lattice change confirmed the incorporation of Ru inside the InP QDs. Moreover, the integration of Ru-doped QDs into LEDs in a liquid matrix led to an external quantum efficiency of 7.9%. This study demonstrates that Ru doping can be an alternative strategy for efficient red emitters.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Quantum Dots Synthesis And Properties · Advanced biosensing and bioanalysis techniques · Molecular Junctions and Nanostructures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Biomedical Science and Engineering, Koç University, Istanbul 34450, Turkey
Department of Electrical and Electronics Engineering, Koç University, Istanbul 34450, Turkey
Koç University Surface Science and Technology Center (KUYTAM), Istanbul 34450, Turkey
Department of Chemistry, College of Sciences, Koç University, Istanbul 34450, Turkey
Koç University Boron and Advanced Materials Application and Research Center (KUBAM), Koç University, Istanbul 34450, Turkey
Koç University Tüpraş Energy Center (KUTEM), Istanbul 34450, Turkey
Laser Research Laboratory, Departments of Physics and Electrical-Electronics Engineering, Koç University, Istanbul 34450, Turkey
Graduate School of Material Science and Engineering, Koç University, Istanbul 34450, Turkey
Funding
T?rkiye Bilimsel ve Teknolojik Arastirma Kurumu · T?rkiye Bilimler Akademisi · Bilim Kahramanlari Dernegi
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