Skip to main content

Enhanced Performance of Au/P3HT/(Bilayer Dielectrics)/Si Thin-Film-Transistor Having Gold Nanoparticles Chemically Bonded to P3HT

Buy Article:

$113.00 plus tax (Refund Policy)


The charge transport enhancement of using poly(3-hexylthiophene) covalently bonded with gold nanoparticles as an active layer in a bottom-gate/top contact, Au/(P3HT)/(bilayer dielectric)/Si OTFT device has been studied. P3HT was synthesized via the modified Grignard metathesis method and functionalized to have a thiol terminal (P3HTSH). Gold nanoparticles (AuNPs) with sizes ranging from 2 to 10 nm were then formed via a reduction of HAuCl4 in the presence of P3HTSH. Compared to the pristine P3HT, the AuNPs-containing P3HT composite materials have a higher energy level of HOMO and a smaller electrochemical bandgap E g chem. The smaller bandgap enhances the charge carrier mobility and the higher HOMO energy level indicates a reduced barrier and an increased injection rate for charge carrier at the source contact. Furthermore, the threshold voltage V T of AuNPs-containing P3HT samples remain nearly unchanged and their saturation current I D and the field–effect mobility are higher. An OTFT device fabricated with a composite sample containing 1.30% AuNPs has a carrier mobility and saturation current nearly two time higher than pristine P3HT.

Document Type: Research Article


Publication date: March 1, 2012

More about this publication?
  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more