Semiconductor conjugated polymer - Quantum dot nanocomposites at the air/water interface and their photovoltaic performance

Matthew D. Goodman, Jun Xu, Jun Wang, Zhiqun Lin

Research output: Contribution to journalArticle

Abstract

Organic - inorganic nanocomposites consisting of electroactive conjugated polymer, poly(3-hexylfhi-ophene) (P3HT), intimately tethered on the surface of semiconductor CdSe quantum dot (i.e., P3HT-CdSe nanocomposites) at the air/water interface formed via Langmuir isotherms were explored for the first time. The P3HT - CdSe nanocomposites displayed a high pressure plateau (~10.5 mN/m) in the Langmuir isotherm, illustrating their complex packing at the air/water interface. The packing of the Langmuir - Blodgett (LB) depositions of nanocomposites was revealed by AFM measurements. Furthermore, photovoltaic devices fabricated from the LB depositions of the P3HT - CdSe nanocomposites exhibited a relatively high short circuit current, I sc, while maintaining a thin film profile. These studies provide insights into the fundamental behaviors of semiconductor organic - inorganic nanocomposites confined at the air/water interface as well as in the active layer of an organic-based photovoltaic device.

Original languageEnglish (US)
Pages (from-to)934-938
Number of pages5
JournalChemistry of Materials
Volume21
Issue number5
DOIs
StatePublished - Mar 10 2009
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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