Large photoresponsivity in high-mobility single-crystal organic field-effect phototransistors

Marta Mas-Torrent*, Peter Hadley, Núria Crivillers, Jaume Veciana, Concepció Rovira

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


(Graph Presented) Photons control number of mobile charge carriers: Organic field-effect transistors based on dithiophene-tetrathiafulvalene (DT-TTF) and dibenzo-tetrathiafulvalene (DB-TTF) show enhanced conductivity under illumination (see figure). A very high ratio of photocurrent to dark current of the order of ≈ 104 was observed for DT-TTF due to the photogeneration of mobile charge carriers (holes). These materials have the potential to be employed as light sensors or optoelectronic memory devices.

Original languageEnglish
Pages (from-to)86-88
Number of pages3
Issue number1
Publication statusPublished - 16 Jan 2006
Externally publishedYes


  • Conducting materials
  • Molecular devices
  • Molecular electronics
  • Photochemistry
  • Semiconductors

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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