Field emission from nanorod crystalline films of a strong organic electron donor, tetrathiotetracene.
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 approximately 375 degrees C) was introduced into field emitters. Nanorod crystalline films of TTT were synthesized by vacuum deposition depending on the strong pi--pi interaction between TTT molecules. The nanorod films exhibited excellent field emission properties with a turn-on field of 11.1-11.3 V/microm, a maximum current density of 5.0-7.1 mA/cm2 at an applied field of 25 V//microm, which indicated great potential for field emission application of the strong organic electron donor, TTT.
Wei
Zhongming
Z
Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, and Graduate School of Chinese Academy of Sciences, Beijing 100190, PR China.
Huang
Changshui
C
Liu
Yaling
Y
Liu
Huibiao
H
Xu
Wei
W
Hu
Wenping
W
Li
Yuliang
Y
Zhu
Daoben
D