Field Emission from Nanorod Crystalline Films of a Strong Organic Electron Donor, Tetrathiotetracene
Abstract:A strong electron donor, tetrathiotetracene (TTT), with low ionization potential (6.27 eV), low electron affinity (1.10 eV), high conductivity (up to 10−5 S/m) and good thermal stability (melting point ∼ 375 °C) was introduced into field emitters. Nanorod crystalline films of TTT were synthesized by vacuum deposition depending on the strong –pi interaction between TTT molecules. The nanorod films exhibited excellent field emission properties with a turn-on field of 11.1∼11.3 V/m, a maximum current density of 5.0∼7.1 mA/cm2 at an applied field of 25 V/m, which indicated great potential for field emission application of the strong organic electron donor, TTT.
Document Type: Research Article
Publication date: November 1, 2009
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