Projection lithography patterned high-resolution quantum dots/thiol-ene photo-polymer pixels for color down conversion
Name
oe-27-21-30864.pdf
Description
Published version
Size
2.58 MB
Format
Adobe PDF
Checksum (MD5)
f0d3550deac1c5118425ccf2e3a8cb8f
Author(s)
Li, Xinhao
Kundaliya, Darshan
Tan, Zheng Jie
Anc, Maria
Fang, Nicholas X
Date Issued
2019
Journal
Optics Express
Publisher
The Optical Society
Version
Final published version
Abstract
© 2019 Optical Society of America. Pixelated color converters are envisioned to achieve full-color high-resolution display through down conversion of blue/ultraviolet(UV) micro-LEDs. Quantum dots (QDs) are promising narrow-band converters of high quantum efficiency and brightness enabling saturated colors with wide color gamut in displays. Here we demonstrate high-resolution pixelated red and green QDs/thiol-ene photo-polymer converters (single pixel down to 6 µm; converters array of 21 µm pixel, 30 µm pitch and sub 10 µm thickness) patterned through projection lithography. QDs capped with amine surface group are uniformly dispersed in thiol-ene photo-polymer matrix at high concentrations (up to 100 mg/mL), which reduces aggregation and improves conversion efficiency by 0.5-1 times compared to drop-cast QDs. Color cross-talk is also reduced through patterning light blocking walls between converter pixels.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1364/OE.27.030864
