Journal
NANOMATERIALS
Volume 12, Issue 23, Pages -Publisher
MDPI
DOI: 10.3390/nano12234140
Keywords
ALD passivation technology; perovskite quantum dots; reliability; micro-displays; VLC
Categories
Funding
- National Science and Technology Council of Taiwan
- [NSTC 111-2622-E-A49 -014]
- [111-2124-M-A49 -004]
- [108-2221-E-009-113-MY3]
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In this study, highly stable perovskite quantum dots (PQDs) coated with Al2O3 using atomic layer deposition (ALD) passivation technology were proposed. The passivation layer effectively protected the QDs from various conditions and exhibited excellent stability and reliability. By integrating with red phosphor, a white-light system with high data transmission rate was achieved.
In this study, we propose highly stable perovskite quantum dots (PQDs) coated with Al2O3 using atomic layer deposition (ALD) passivation technology. This passivation layer effectively protects the QDs from moisture infiltration and oxidation as well as from high temperatures and any changes in the material characteristics. They exhibit excellent wavelength stability and reliability in terms of current variation tests, long-term light aging tests, and temperature/humidity tests (60 degrees/90%). A white-light system has been fabricated by integrating a micro-LED and red phosphor exhibiting a high data transmission rate of 1 Gbit/s. These results suggest that PeQDs treated with ALD passivation protection offer promising prospects in full-color micro-displays and high-speed visible-light communication (VLC) applications.
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