Molecular self-assembled monolayers and multilayers for organic and unconventional inorganic thin-film transistor applications

Sara A. DiBenedetto, Antonio Facchetti, Mark A Ratner, Tobin J Marks

Research output: Contribution to journalArticle

456 Citations (Scopus)

Abstract

Principal goals in organic thin-film transistor (OTFT) gate dielectric research include achieving: (i) low gate leakage currents and good chemical/thermal stability, (ii) minimized interface trap state densities to maximize charge transport efficiency, (iii) compatibility with both p- and n- channel organic semiconductors, (iv) enhanced capacitance to lower OTFT operating voltages and (v) efficient fabrication via solution-phase processing methods. In this Review, we focus on a prominent class of alternative gate dielectric materials: self-assembled monolayers (SAMs) and multilayers (SAMTs) of organic molecules having good insulating properties and large capacitancevalues, requisite properties for addressing these challenges. We first describe the formation and properties of SAMs on various surfaces (metals and oxides), followed by a discussion of fundamental factors governing charge transport through SAMs. The last section focuses on the roles that SAMs and SAMTs play in OTFTs, such as surface treatments, gate dielectrics, and finally as the semiconductor layer in ultra-thin OTFTs.

Original languageEnglish
Pages (from-to)1407-1433
Number of pages27
JournalAdvanced Materials
Volume21
Issue number14-15
DOIs
Publication statusPublished - Apr 20 2009

Fingerprint

Self assembled monolayers
Thin film transistors
Gate dielectrics
Multilayers
Charge transfer
Semiconducting organic compounds
Chemical stability
Leakage currents
Oxides
Surface treatment
Thermodynamic stability
Capacitance
Metals
Semiconductor materials
Fabrication
Molecules
Electric potential
Processing

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Molecular self-assembled monolayers and multilayers for organic and unconventional inorganic thin-film transistor applications. / DiBenedetto, Sara A.; Facchetti, Antonio; Ratner, Mark A; Marks, Tobin J.

In: Advanced Materials, Vol. 21, No. 14-15, 20.04.2009, p. 1407-1433.

Research output: Contribution to journalArticle

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