Push-Pull π-electron phosphonic-acid-based self-assembled multilayer nanodielectrics fabricated in ambient for organic transistors

Young Geun Ha, Antonio Facchetti, Tobin J. Marks

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Push-pull π-electron phosphonic-acid-based self-assembled multilayer nanodielectrics (SAND) fabricated in ambient for organic transistors was studied. In the present multilayer synthetic approach, a ZrP primer layer is first deposited by exposing the substrate surface hydroxyl groups to POCl 3 and then to a ZrOCl 2 solution. Self-assembled nanodielectric layers are then fabricated, first depositing the ZrP primer layer on a silicon wafer, and then the phosphonic-acid-based π-electron (PAE) layer, followed by the ZrP interlayer for capping and further self-assembly. Specially, clean, heavily doped n-type silicon substrates are immersed in a CH 3CN solution of 0.2 M POCl 3-0.2 M collidine at 25°C for 18 h, rinsed with DI H 20, zirconated in 5 mM aqueous ZrOCl 2 solution at room temperature for 2 h, and finally rinsed again with DI H 20 to complete the ZrP primer layer. Atomic force microscopic images of the 1p-SANd and 2p-SAND surfaces are consistent with crack-free morphologies.

Original languageEnglish
Pages (from-to)1173-1175
Number of pages3
JournalChemistry of Materials
Volume21
Issue number7
DOIs
Publication statusPublished - Apr 14 2009

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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