Phototransistors of a rigid rod conjugated polymer

Huanli Dong, Hongxiang Li, Erjing Wang, Hiroshi Nakashima, Keiichi Torimitsu, Wenping Hu

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


Phototransistors of a rigid-rod conjugated polymer, a derivative of poly(para-phenylene ethynylene)s with thioacetyl end groups (TA-PPE), were investigated. The phototransistors exhibited high photo-response properties with responsivity at 36 mA/W and switch ratio up to 3.3 × 10 3, indicating the potential applications of the phototransistors in optoelectronic devices. Moreover, the photoresponse mechanism of the transistors was examined. Two effects-photoconductive and photovoltaic effects-were both observed in the same transistors depending on the gate bias. With gate bias the polymer phototransistors were dominated by photovoltaic effect, while without gate bias the devices were decided by photoconductive effect.

Original languageEnglish
Pages (from-to)19690-19693
Number of pages4
JournalJournal of Physical Chemistry C
Issue number49
Publication statusPublished - 2008 Dec 11
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films


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