The electroluminescent and photodiode device made of a polymer blend

J. Y. Park, H. M. Le, G. T. Kim, H. Park, Y. W. Park, I. N. Kang, D. H. Hwang, H. K. Shim

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Organic thin film diodes made by a polymer blend of poly[2-methoxy,5-(2′-ethyl-hexoxy)-1,4-phenylenevinylene] (MEH-PPV) and poly[1,3-propanedioxy-1,4-phenylene-1,2-ethenylene-(2,5-bis(trimethylsilyl)-1,4- phenylene)-1,2-ethenylene-1,4-phenylene] (called the B-polymer) are investigated. The device of sandwich configuration indium-tin oxide (ITO)/polymer-blend/Al emits orange light under forward bias at +10 V and the same device acts as a photodiode under reverse bias. To investigate the photodiode characteristics, the 516 nm wavelength with 9.5 mW/cm2 intensity of light is illuminated through the Al contact side of the device. The I-V characteristic measurement shows the short circuit current and the open circuit voltage of -1.22×10-9 A/cm2 and 0.8 V, respectively. The ratio of the photocurrent to the dark current is about 4×102 at -2.5 V reverse bias. The maximum d.c. sensitivity is 1.35×10-5 A/W at -7 V reverse bias voltage with 16 mW/cm2 intensity of the incident light. The results indicate the possibility of making photosensors using this device.

Original languageEnglish
Pages (from-to)177-181
Number of pages5
JournalSynthetic Metals
Issue number3
Publication statusPublished - 1996 May 30
Externally publishedYes


  • Devices
  • Diodes
  • Electroluminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


Dive into the research topics of 'The electroluminescent and photodiode device made of a polymer blend'. Together they form a unique fingerprint.

Cite this