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Title: Sub-Micrometer Zeolite Films on Gold-Coated Silicon Wafers with Single-Crystal-Like Dielectric Constant and Elastic Modulus

Journal Article · · Advanced Functional Materials
 [1];  [2];  [2];  [2];  [2];  [3];  [4];  [2];  [2];  [5];  [1];  [2]
  1. Univ. Magna Graecia of Catanzaro, Viale Europa, Catanzaro (Italy). Dept. of Medical and Surgical Sciences
  2. Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Chemical Engineering and Materials Science
  3. Univ. of Minnesota, Minneapolis, MN (United States). Characterization Facility
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Surface Scattering and Microdiffraction, X-ray Science Division
  5. Univ. Magna Graecia of Catanzaro, Viale Europa Catanzaro (Italy). Dept. of Health Sciences

A low-temperature synthesis coupled with mild activation produces zeolite films exhibiting low dielectric constant (low-k) matching the theoretically predicted and experimentally measured values for single crystals. This synthesis and activation method allows for the fabrication of a device consisting of a b-oriented film of the pure-silica zeolite MFI (silicalite-1) supported on a gold-coated silicon wafer. The zeolite seeds are assembled by a manual assembly process and subjected to optimized secondary growth conditions that do not cause corrosion of the gold underlayer, while strongly promoting in-plane growth. The traditional calcination process is replaced with a nonthermal photochemical activation to ensure preservation of an intact gold layer. The dielectric constant (k), obtained through measurement of electrical capacitance in a metal–insulator–metal configuration, highlights the ultralow k ≈ 1.7 of the synthetized films, which is among the lowest values reported for an MFI film. There is large improvement in elastic modulus of the film (E ≈ 54 GPa) over previous reports, potentially allowing for integration into silicon wafer processing technology.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Gas Separations Relevant to Clean Energy Technologies (CGS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001015; AC02-06CH11357; FG02-12ER16362
OSTI ID:
1389008
Alternate ID(s):
OSTI ID: 1401081
Journal Information:
Advanced Functional Materials, Vol. 27, Issue 25; Related Information: CGS partners with University of California, Berkeley; University of California, Davis; Lawrence Berkeley National Laboratory; University of Minnesota; National Energy Technology Laboratory; Texas A&M University; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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  • Baklanov, Mikhail R.; Maex, Karen
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 364, Issue 1838 https://doi.org/10.1098/rsta.2005.1679
journal November 2005
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Cited By (2)

Insights into 1,2-dihydroxybenzene addition on twin suppression during the secondary hydrothermal synthesis of b-oriented MFI zeolite films journal August 2019
Vapor-deposited zeolitic imidazolate frameworks as gap-filling ultra-low-k dielectrics journal August 2019