Development of Quantum Dot (QD) Based Color Converters for Multicolor Display
| Autor: | Lenuta Stroea, Sybille Allard, Eduard Preis, Francesco Antolini, Muhammad T. Sajjad, Ashu K. Bansal, Michele Muccini, Andrea Migliori, Ifor D. W. Samuel, Stefano Toffanin, Luca Ortolani, Ullrich Scherf |
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| Přispěvatelé: | European Commission, University of St Andrews. Centre for Biophotonics, University of St Andrews. Condensed Matter Physics, University of St Andrews. School of Physics and Astronomy |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
thermal annealing
Materials science Photoluminescence General Chemical Engineering TK Quantum yield 02 engineering and technology Nanocrystal 010402 general chemistry 01 natural sciences Article TK Electrical engineering. Electronics Nuclear engineering nanocrystal chemistry.chemical_compound General Materials Science Narrow emission QD1-999 QC chemistry.chemical_classification energy transfer Nanocomposite Cadmium selenide nanocomposite business.industry Thermal annealing narrow emission DAS Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Chemistry QC Physics chemistry Transmission electron microscopy Quantum dot Energy transfer Optoelectronics 0210 nano-technology business |
| Zdroj: | Nanomaterials Volume 11 Issue 5 Nanomaterials, Vol 11, Iss 1089, p 1089 (2021) |
| ISSN: | 2079-4991 |
| Popis: | Funding: This research was funded by European commission under FP7 LAMP project “Laser Induced Synthesis of Polymeric Nanocomposite Materials and Development of Micro-patterned Hybrid Light Emitting Diodes (LED) and Transistors (LET)” (Grant No. 247928) Many displays involve the use of color conversion layers. QDs are attractive candidates as color converters because of their easy processability, tuneable optical properties, high photoluminescence quantum yield, and good stability. Here, we show that emissive QDs with narrow emission range can be made in-situ in a polymer matrix, with properties useful for color conversion. This was achieved by blending the blue-emitting pyridine based polymer with a cadmium selenide precursor and baking their films at different temperatures. To achieve efficient color conversion, blend ratio and baking temperature/time were varied. We found that thermal decomposition of the precursor leads to highly emissive QDs whose final size and emission can be controlled using baking temperature/time. The formation of the QDs inside the polymer matrix was confirmed through morphological studies using atomic force microscopy (AFM) and transmission electron microscopy (TEM). Hence, our approach provides a cost-effective route to making highly emissive color converters for multi-color displays. Publisher PDF |
| Databáze: | OpenAIRE |
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