Quantum Dot to Nanorod Transition for Efficient White-Light-Emitting Diodes with Suppressed Absorption Losses
| العنوان: | Quantum Dot to Nanorod Transition for Efficient White-Light-Emitting Diodes with Suppressed Absorption Losses |
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| المؤلفون: | Asim Onal, Sadra Sadeghi, Rustamzhon Melikov, Onuralp Karatum, Guncem Ozgun Eren, Sedat Nizamoglu |
| المساهمون: | Önal, Asım, Sadeghi, Sadra, Karatum, Onuralp, Nizamoğlu, Sedat (ORCID 0000-0003-0394-5790 & YÖK ID 130295), Eren, Güncem Özgün, Melikov, Rustamzhon, College of Engineering, Graduate School of Sciences and Engineering, Department of Materials Science and Engineering, Department of Electrical and Electronics Engineering, Department of Biomedical Sciences and Engineering |
| المصدر: | ACS Photonics |
| بيانات النشر: | American Chemical Society (ACS), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Quantum dots, Nanorods, External quantum efficiency, Light-emitting diodes, Liquid, Luminous efficiency, Electrical and Electronic Engineering, Nanoscience and nanotechnology, Materials science, multidisciplinary, Optics, Physics, applied, Physics, condensed matter, Atomic and Molecular Physics, and Optics, Biotechnology, Electronic, Optical and Magnetic Materials |
| الوصف: | Colloidal nanocrystals have great potential for next-generation solid-state lighting due to their outstanding emission and absorption tunability via size and morphology, narrow emission linewidth, and high photoluminescence quantum yield (PLQY). However, the losses due to self-and interabsorption among multitudes of nanocrystals significantly decrease external quantum yield levels of light-emitting diodes (LEDs). Here, we demonstrate efficient white LEDs via CdSe/CdS dot to ""dot-in-rod"" transition that enabled a large Stokes shift of 780 meV and significantly reduced absorption losses when used in conjunction with near-unity PLQY ZnCdSe/ZnSe quantum dots (QDs) emitting at the green spectral range. The optimized incorporation of nanocrystals in a liquid state led to the white LEDs with an ultimate external quantum efficiency (EQE) of 42.9%, with a net increase of EQE of 10.3% in comparison with white LEDs using CdSe/CdS dots. Therefore, combinations of nanocrystals with different nanomorphologies hold high promise for efficient white LEDs. Scientific and Technological Research Council of Turkey (TÜBİTAK); Turkish Academy of Sciences (TU?BA-GEBIP; The Young Scientist Award Program) |
| وصف الملف: | |
| تدمد: | 2330-4022 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c772573683a54d82aa445d69f913d13c https://doi.org/10.1021/acsphotonics.2c00555 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....c772573683a54d82aa445d69f913d13c |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 23304022 |
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