Photoresponses of a polymer-blend device

Joon Young Park, Gyu Tae Kim, Hoang Mai Le, Yung Woo Park, In Nam Kang, Do Hoon Hwang, Hong Ku Shim, Kyung Soo Suh

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We report the results of the photoconductivity measurements of the polymer-based diode formed with polymer blend of poly[2-methoxy,5-(2′-ethyl-hexoxy)-1,4-phenylene vinylene] (MEH-PPV) and poly[1,3-propanedioxy-1,4-phenylene-1,2-ethenyllene-(2,5-bis(trimethylsilyl)-1, 4-phenylene)-1,2-ethenylene-1,4-phenylene] (called B-polymer). The local peak around 2.87 eV in the spectral response of photocurrent indicates the possibility of the excitation from the HOMO level of MEH-PPV to the LUMO level of B-polymer. From these results, we can conclude that the photocurrent and electroluminescence are originated from the rectified microjunction formation in the polymer blend, not from the energy transfer mechanism.

Original languageEnglish
Pages (from-to)133-136
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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