Layer-by-layer controlled perovskite nanocomposite thin films for piezoelectric nanogenerators

Younghoon Kim, Keun Young Lee, Sun Kak Hwang, Cheolmin Park, Sang Woo Kim, Jinhan Cho

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Perovskite nanoparticle-based nanocomposite thin films strictly tailored using unconventional layer-by-layer (LbL) assembly in organic media for piezoelectric nanogenerators (NGs) are demonstrated. By employing sub-20-nm BaTiO3 nanoparticles stabilized by oleic acid ligands (i.e., OA-BTONPs) and carboxylic acid (COOH)-functionalized polymers, such as poly(acrylic acid) (PAA), the resulting OA-BTONP/PAA nanocomposite multilayers are prepared by exploiting the high affinity between the COOH groups of PAA and the BTONPs. The ferroelectric and piezoelectric performance of the (PAA/OA-BTONP)n thin films can be precisely controlled by altering the bilayer number, inserted polymer type, and OA-BTONP size. It is found that the LbL assembly in nonpolar solvent media can effectively increase the quantity of adsorbed OA-BTONPs, resulting in the dramatic enhancement of electric power output from the piezoelectric NGs. Furthermore, very low leakage currents are detected from the (PAA/OA-BTONP)n thin films for obtaining highly reliable power-generating performance of piezoelectric NGs.

Original languageEnglish
Pages (from-to)6262-6269
Number of pages8
JournalAdvanced Functional Materials
Volume24
Issue number40
DOIs
Publication statusPublished - 2014 Oct 29

Fingerprint

Nanocomposite films
Perovskite
nanocomposites
carbopol 940
Thin films
Polymers
thin films
Nanoparticles
Oleic acid
assembly
Oleic Acid
Carboxylic Acids
Carboxylic acids
Leakage currents
nanoparticles
Acrylics
Ferroelectric materials
oleic acid
Nanocomposites
Multilayers

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Layer-by-layer controlled perovskite nanocomposite thin films for piezoelectric nanogenerators. / Kim, Younghoon; Lee, Keun Young; Hwang, Sun Kak; Park, Cheolmin; Kim, Sang Woo; Cho, Jinhan.

In: Advanced Functional Materials, Vol. 24, No. 40, 29.10.2014, p. 6262-6269.

Research output: Contribution to journalArticle

Kim, Younghoon ; Lee, Keun Young ; Hwang, Sun Kak ; Park, Cheolmin ; Kim, Sang Woo ; Cho, Jinhan. / Layer-by-layer controlled perovskite nanocomposite thin films for piezoelectric nanogenerators. In: Advanced Functional Materials. 2014 ; Vol. 24, No. 40. pp. 6262-6269.
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