Direct comparison of field-effect and electrochemical doping in regioregular poly(3-hexylthiophene)

Hidekazu Shimotani, Gildas Diguet, Yoshihiro Iwasa

Research output: Contribution to journalArticlepeer-review

119 Citations (Scopus)

Abstract

We have measured carrier mobility of regioregular poly(3-hexylthiophene) films by both field-effect and electrochemical doping on identical devices, which allowed us a direct comparison between the two doping processes. The carrier mobility of electrochemical doping at low doping levels was lower than that of field-effect doping by two orders of magnitudes, while that of electrochemical doping steeply increased with doping levels, reaching comparable or higher values than that of field-effect doping. These results are attributable to carrier trapping by the Coulomb potentials of dopant anions at low doping levels, demonstrating a significant difference between field-effect and chemical doping.

Original languageEnglish
Article number022104
JournalApplied Physics Letters
Volume86
Issue number2
DOIs
Publication statusPublished - 2005 Jan 10

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Direct comparison of field-effect and electrochemical doping in regioregular poly(3-hexylthiophene)'. Together they form a unique fingerprint.

Cite this