Abstract
The effects of tetrafluoromethane (CF4) plasma treatment of indium-tin-oxide (ITO) anode on indium diffusion into a poly(3,4-ethylene dioxythiophene):poly(styrene sulphonate) (PEDOT:PSS) layer were studied. Auger electron spectroscopy (AES) depth profile showed that 0.2 at. % indium was present in the PEDOT:PSS layer when ITO was not plasma treated. The plasma treatment of ITO increased the indium concentration to ∼6 at. %. The increase in indium can be explained by an oxygen deficiency in the CF 4 plasma treated ITO. The presence of indium in the PEDOT:PSS layer showed a correlation with performance degradation of polymer light-emitting diodes.
Original language | English |
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Article number | 114502 |
Journal | Journal of Applied Physics |
Volume | 103 |
Issue number | 11 |
DOIs | |
State | Published - 2008 |