Modified PEDOT-PSS Conducting Polymer as S/D Electrodes for Device Performance Enhancement of P3HT TFTs
| Autor: | Fengliang Xue, K. Varahramyan, Yi Su |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
chemistry.chemical_classification
Conductive polymer Materials science Equivalent series resistance business.industry Transistor Electrical engineering Polymer Conductivity eye diseases Electronic Optical and Magnetic Materials law.invention stomatognathic diseases chemistry.chemical_compound Sulfonate chemistry PEDOT:PSS law Electrode Optoelectronics Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Electron Devices. 52:1982-1987 |
| ISSN: | 0018-9383 |
| Popis: | Poly(3,4-ethylenedioxythiophene)-Polystyrene Sulfonate (PEDOT-PSS) is the most widely used conducting polymer as electrode material in organic (polymer) devices. However, commercially available PEDOT-PSS in our experiment has a relatively low conductivity that reduces the device performance when it is used for electrode material. The purchased PEDOT-PSS has been mixed with polar solvent dimethyl sulfoxide, which increases its conductivity from 0.07 to 30 S/cm. The enhanced conductivity has long-term stability at room temperature and short-term stability at high temperature (100/spl deg/C) in air ambient. The modified PEDOT-PSS has been inkjet printed and used as source/drain (S/D) electrodes for poly(3-hexylthiophene) (P3HT) thin-film transistors (TFTs). Unmodified PEDOT-PSS and gold have also been used as S/D electrodes for comparison. The TFTs with modified PEDOT-PSS electrodes show significantly improved performance over the devices with unmodified PEDOT-PSS electrodes and are similar to the devices with gold electrodes. The difference in device performance mainly results from parasitic series resistance. In the devices with unmodified PEDOTT-PSS, high electrode series resistance has several effects on devices, e.g., restricted current growth at high negative gate voltage, reduced on/off current ratio and current output capability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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