ACTA

MoO_x Doped Single-Walled Carbon Nanotube Films as Hole Transport Layer for Organic Solar Cells

F. Çolak^a, Z. Dalkılıç^b, A. Tabatabaei^c, R. Atlıbatur^b, Ü. Çolak^a, E. Arıcı^a, and N. Karatepe^a
^aIstanbul Technical University, Energy Institute, 34469 Istanbul, Turkey
^bIstanbul Technical University, Department of Chemistry, 34469 Istanbul, Turkey
^cIstanbul Technical University, Division of Nanosicence and Nanoengineering, 34469 Istanbul, Turkey

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Metal-oxide thin films have recently become good candidates for the hole transport layer material, for solving the stability problem in organic photovoltaic devices. Metal oxide semiconductors (MoO_x, WO₃, V₂O₅) are very promising because of their suitable optoelectronic properties, ambient stability, high work function, and solution processability. Intrinsic n-type behavior of molybdenum oxide (MoO_x) is found to enhance p-type doping effect on single-walled carbon nanotubes. In this study, the effect of using MoO_x doped single-walled carbon nanotube films as hole transport layer in organic solar cells was investigated. Thin films and organic solar cells were characterized using scanning electron microscopy, atomic force microscopy, UV-NIR absorption spectroscopy and device current-voltage measurements.

DOI: 10.12693/APhysPolA.131.474
PACS numbers: 81.07.Pr