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High-Reliability Perovskite Quantum Dots Using Atomic Layer Deposition Passivation for Novel Photonic Applications

In this study, we propose highly stable perovskite quantum dots (PQDs) coated with Al(2)O(3) 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 t...

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Detalles Bibliográficos
Autores principales: Lee, Tzu-Yi, Hsieh, Tsau-Hua, Miao, Wen-Chien, James Singh, Konthoujam, Li, Yiming, Tu, Chang-Ching, Chen, Fang-Chung, Lu, Wen-Chung, Kuo, Hao-Chung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9736641/
https://www.ncbi.nlm.nih.gov/pubmed/36500764
http://dx.doi.org/10.3390/nano12234140
Descripción
Sumario:In this study, we propose highly stable perovskite quantum dots (PQDs) coated with Al(2)O(3) 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°/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.