Interdigitated electrode geometry effects on the performance of organic photoconductors for optical sensor applications

Jin Wook Jeong, Jin Woo Huh, Jeong Ik Lee, Hye Yong Chu, James Jungho Pak, Byeong Kwon Ju

Research output: Contribution to journalArticle

13 Citations (Scopus)


This paper studies the electrical characteristics of solution-processed organic photosensors (OPSs) made from organic materials of poly-3-hexylthiophene (P3HT) and [6,6]-phenyl-C61 butyric acid methyl ester (PCBM), with four-type of interdigitated electrodes for achieving high photo-sensing performances. The thin layers of organic material are deposited by spin-coating methods. The current of the OPSs through the semiconductor organic films is measured under light intensities ranging from dark to 300 mW/cm2. At 10 V bias and 300 mW/cm2 illumination, the currents obtained from pristine P3HT and blended P3HT/PCBM, both spin-coated, are 6.9 × 10- 5 mA, and 3.6 × 10- 5 mA, respectively. Finally, in order to evaluate the response characteristics under illumination, the current characteristics of the OPS are measured as a function of time and results confirm good reproducibility and fast response times of the OPSs.

Original languageEnglish
Pages (from-to)6343-6347
Number of pages5
JournalThin Solid Films
Issue number22
Publication statusPublished - 2010 Sep 1



  • Organic photodiodes
  • Organic photosensors
  • Photoconductors
  • Polymer sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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