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Journal Article
Aerosol Jet Printed Polymer-Free High Aspect Ratio Quantum Dot Films for Enhanced Color Conversion
- Authors
- Sukyung Choi, Anna Meredith, Hyunsu Cho, Zahra Bahrami, Kevin Schnittker, Joseph Andrews
- Issue Date
- 2026-06
- Citation
- Advanced Optical Materials, v.14, no.24, pp.1-8
- ISSN
- 2195-1071
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Abstract
- Quantum dot (QD) color conversion layers (CCLs) are a promising route toward wide color gamut, simplified display architectures. However, simultaneously achieving high optical quality, fine patterning resolution, and scalable processing remains challenging. Here, we report a polymer-free aerosol jet printing approach for fabricating high-aspect-ratio QD CCLs with precisely controlled morphology and optical performance. By tuning the aerosol focus ratio to induce in-flight droplet drying, we achieve pinned contact-line deposition that enables multilayer QD films with thicknesses up to approximately 10 µm while maintaining lateral feature widths of approximately 50 µm. These polymer-free QD films exhibit strong blue-light absorption and efficient wavelength down-conversion, yielding blue light leakage below 0.25% and conversion efficiencies approaching 18% without the use of external color filters. The printed QD layers are integrated directly onto blue OLED unit devices and a 0.7-inch OLED-on-silicon (OLEDoS) microdisplay, demonstrating high-purity red emission with no degradation of device electrical performance. This work establishes aerosol jet printing as a powerful materials processing strategy for scalable, high-resolution QD color conversion in next-generation microdisplay and near-eye display technologies.
- Keyword
- color conversion, printed electronics, printed optical materials, quantum Dots
- KSP Keywords
- Blue light, Controlled morphology, Conversion efficiency(C.E.), Conversion layers, Display technology, Electrical Performance, Fine patterning, High Aspect Ratio, High optical quality, High-purity, In-flight
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
