Trapping of electrons in metal oxide-polymer memory diodes in the initial stage of electroforming
Metal oxide-polymer diodes require electroforming before they act as nonvolatile resistive switching memory diodes. Here we investigate the early stages of the electroforming process in Al/Al2O3 /polyspirofluorene /Ba/Al diodes using quasistatic capacitance-voltage measurements. In the initial stage...
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| Other Authors: | , , , |
| Format: | article |
| Language: | eng |
| Published: |
2014
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| Online Access: | http://hdl.handle.net/10400.1/3286 |
| Country: | Portugal |
| Oai: | oai:sapientia.ualg.pt:10400.1/3286 |
| Summary: | Metal oxide-polymer diodes require electroforming before they act as nonvolatile resistive switching memory diodes. Here we investigate the early stages of the electroforming process in Al/Al2O3 /polyspirofluorene /Ba/Al diodes using quasistatic capacitance-voltage measurements. In the initial stage, electrons are injected into the polymer and then deeply trapped near the polyspirofluorene-Al2O3 interface. For bias voltages below 6 V, the number of trapped electrons is found to be CoxideV/q with Coxide as the geometrical capacitance of the oxide layer. This implies a density of traps for the electrons at the polymer-metal oxide interface larger than 31017 m−2. |
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