Nanoscale optical and photoresponsive electrical properties of P3HT and PCBM composite nanowires

Kihyun Kim, Jin Woo Lee, Suk Ho Lee, Yong Baek Lee, Eun Hei Cho, Hak Seob Noh, Seong Gi Jo, Jinsoo Joo

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In this paper, we report on the fabrication, intrinsic characteristics, and photoresponsive electrical properties of heterojunction composite nanowires (NWs) consisting of p-type poly (3-hexylthiophene) (P3HT) and n-type [6,6]-phenyl C61 butyric acid methyl ester (PCBM). The P3HT:PCBM heterojunction composite NWs were prepared through a wetting method based on an alumina nanoporous template. The nanoscale optical and structural properties of the single NW were investigated using laser confocal microscope Raman and photoluminescence spectra. The photoresponsive current-voltage (I-V) characteristics of the P3HT:PCBM single NW were measured by means of Au-Al electrode patterns. For the P3HT:PCBM single NW, the I-V characteristics in the dark condition showed diode-like behaviors due to the formation of energy barriers. Under light illumination, the current level of the P3HT:PCBM single NW was enhanced at a relatively high applied bias (≥10 V). The photovoltaic effect was observed for the solar cells using P3HT:PCBM composite NWs and the maximum power conversion efficiency was estimated to be 0.14%.

Original languageEnglish
Pages (from-to)1695-1700
Number of pages6
JournalOrganic Electronics
Volume12
Issue number10
DOIs
Publication statusPublished - 2011 Oct 10

Keywords

  • Nanocharacteristics
  • Nanowire
  • Photoresponsive electrical characteristics
  • Photovoltaic effect
  • Poly (3-hexylthiophene)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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