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Title: General Strategy for the Preparation of Stable Luminous Nanocomposite Inks Using Chemically Addressable CsPbX3 Peroskite Nanocrystals

Journal Article · · Chemistry of Materials

The potential optoelectronic applications of perovskite nanocrystals (NCs) are primarily limited by major material instability arising from the ionic nature of the NC lattice. Herein, we introduce a facile and effective strategy to prepare extremely stable CsPbX3 NC-polymer composites. NC surfaces are passivated with reactive methacrylic acid (MA) ligands, resulting in the formation of homogeneous nanocubes (abbreviated as MA-NCs) with a size of 14-17 nm and a photoluminescence quantum yield above 80%. The free double bonds on the surface then serve as chemically addressable synthetic handles, enabling UV-induced radical polymerization. Critically, a bromide-rich environment is developed to prevent NC sintering. The composites obtained from copolymerizing MA-NCs with hydrophobic methyl methacrylate and methacrylisobutyl polyhedral oligomeric silsesquioxane monomers exhibit enhanced properties compared to previously reported encapsulated NCs, including higher quantum yields, remarkable chemical stability toward water, and much enhanced thermal stability. The good solubility of the composite in organic solvent further enables its use as a solution-processable luminescent ink, used here for fabrication of white-light-emitting diodes with high luminous efficiency and excellent color-rendering index. The resulting fluorescent and stable NC ink opens the door to potential scalable and robust optoelectronic applications.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1530353
Journal Information:
Chemistry of Materials, Vol. 30, Issue 8; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 90 works
Citation information provided by
Web of Science

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Cited By (20)

A stimuli responsive material of perovskite quantum dots composited nano-porous glass journal January 2018
Stabilizing perovskite nanocrystals by controlling protective surface ligands density journal May 2019
Stable Perovskite Quantum Dots Coated with Superhydrophobic Organosilica Shells for White Light‐Emitting Diodes journal October 2019
An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs journal January 2019
Air-stable all-inorganic perovskite quantum dot inks for multicolor patterns and white LEDs journal January 2019
Recent advances and perspectives on light emitting diodes fabricated from halide metal perovskite nanocrystals journal January 2019
Ultrastability and color-tunability of CsPb(Br/I) 3 nanocrystals in P–Si–Zn glass for white LEDs journal January 2018
Stable luminous nanocomposites of CsPbX 3 perovskite nanocrystals anchored on silica for multicolor anti-counterfeit ink and white-LEDs journal January 2019
Water-stable and ion exchange-free inorganic perovskite quantum dots encapsulated in solid paraffin and their application in light emitting diodes journal January 2019
Incorporating CsPbBr 3 Nanocrystals into Porous AlO(OH) Matrices to Improve their Stability in Backlit Displays journal December 2019
Branched capping ligands improve the stability of cesium lead halide (CsPbBr 3 ) perovskite quantum dots journal January 2019
Highly Efficient and Water‐Stable Lead Halide Perovskite Quantum Dots Using Superhydrophobic Aerogel Inorganic Matrix for White Light‐Emitting Diodes journal December 2019
Solution-based green amplified spontaneous emission from colloidal perovskite nanocrystals exhibiting high stability journal May 2019
Luminescent perovskites: recent advances in theory and experiments journal January 2019
Highly luminescent and stable CsPbBr3 perovskite quantum dots modified by phosphine ligands journal January 2019
Epitaxial Growth of CsPbX 3 (X = Cl, Br, I) Perovskite Quantum Dots via Surface Chemical Conversion of Cs 2 GeF 6 Double Perovskites: A Novel Strategy for the Formation of Leadless Hybrid Perovskite Phosphors with Enhanced Stability journal February 2019
All-inorganic cesium lead halide perovskite nanocrystals: synthesis, surface engineering and applications journal January 2019
In situ synthesis of stretchable and highly stable multi-color carbon-dots/polyurethane composite films for light-emitting devices journal January 2020
A three-dimensional cuprous lead bromide framework with highly efficient and stable thermochromic luminescence properties journal January 2020
Metal Halide Perovskite Nanocrystals: Synthesis, Post-Synthesis Modifications and Their Optical Properties text January 2020

Figures / Tables (9)