Effectiveness of p-dopants in an organic hole transporting material
- 23 March 2009
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 94 (12)
- https://doi.org/10.1063/1.3107267
Abstract
We investigated the effectiveness of p-dopants to generate holes in a hole transporting material by comparing the absorption in visible-near-infrared and infrared regions and current density-voltage characteristics. CuI, MoO3, and ReO3 having different work functions were doped in a hole transporting organic material, 4,4′,4″-tris(N-(2-naphthyl)-N-phenylamino)-triphenylamine (2TNATA). Formation of charge transfer (CT) complexes increases linearly with increasing doping concentration for all the dopants. Dopants with higher work function (ReO3>MoO3>CuI) are more effective in the formation of CT complexes and in the generation of the charges in the doped films.Keywords
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