Freestanding High-Resolution Quantum Dot Color Converters with Small Pixel Sizes
| Autor: | Saurabh Srivastava, Kenneth E. Lee, Eugene A. Fitzgerald, Stephen J. Pennycook, Silvija Gradečak |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | ACS Applied Materials & Interfaces. 14:48995-49002 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.2c14212 |
| Popis: | Designing the next generation of high-resolution displays requires high pixel density per area and small pixel sizes without compromising the optical quality. Quantum dots (QDs) have been demonstrated as a promising material system for down-conversion of blue emission as they provide pure colors on the wide color gamut. However, for high color-conversion efficiency, the required QD film thickness has not been compatible with small pixel sizes. In this work, we develop a new type of freestanding QD-based color converter for efficient optical down-conversion from inorganic blue light-emitting diodes (LEDs) in a color-by-blue configuration. CdSe/ZnS core-shell QDs in a UV-curable polymer matrix are encapsulated within cavities formed by patterning and bonding a pair of patterned quartz substrates. By controlling the required QD thickness and the pixel size independently, we demonstrate freestanding monochrome red and green converters with small pixel sizes down to 5 × 5 μm |
| Databáze: | OpenAIRE |
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