Carrier dynamics of films of zinc phthalocyanine and C60 measured by terahertz time domain spectroscopy

Lane P. A., ESENTÜRK O., Melinger J. S., Heilweil E. J.

Laser Science, LS 2010, Rochester, NY, United States Of America, 24 - 28 October 2010, (Full Text) identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1364/ls.2010.lwi3
  • City: Rochester, NY
  • Country: United States Of America
  • Middle East Technical University Affiliated: Yes

Abstract

We studied photocarrier dynamics in organic photovoltaics by terahertz time domain spectroscopy. Transient THz absorption decays in C60 and zinc phthalocyanine span a wide range of timescales and reveal how to optimize photocarrier yields. We find evidence for direct excitation of a charge transfer state of C60 and morphology dependent excitation of free carriers. © 2010 OSA/FiO/LS 2010.