High mobility organic field-effect transistor based on water-soluble deoxyribonucleic acid via spray coating

Wei Shi, Shijiao Han, Wei Huang, Junsheng Yu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

High mobility organic field-effect transistors (OFETs) by inserting water-soluble deoxyribonucleic acid (DNA) buffer layer between electrodes and pentacene film through spray coating process were fabricated. Compared with the OFETs incorporated with DNA in the conventional organic solvents of ethanol and methanol: water mixture, the water-soluble DNA based OFET exhibited an over four folds enhancement of field-effect mobility from 0.035 to 0.153 cm2/Vs. By characterizing the surface morphology and the crystalline structure of pentacene active layer through atomic force microscope and X-ray diffraction, it was found that the adoption of water solvent in DNA solution, which played a key role in enhancing the field-effect mobility, was ascribed to both the elimination of the irreversible organic solvent-induced bulk-like phase transition of pentacene film and the diminution of a majority of charge trapping at interfaces in OFETs.

Original languageEnglish (US)
Article number043303
JournalApplied Physics Letters
Volume106
Issue number4
DOIs
StatePublished - Jan 26 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'High mobility organic field-effect transistor based on water-soluble deoxyribonucleic acid via spray coating'. Together they form a unique fingerprint.

Cite this