201. Improving organic transistor performance through contact-area-limited doping
- Author
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Li, Jun, Zhang, Xiao-Wen, Zhang, Liang, Khizar-ul-Haq, Jiang, Xue-Yin, Zhu, Wen-Qing, and Zhang, Zhi-Lin
- Subjects
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ORGANIC thin films , *THIN film transistors , *PERFORMANCE evaluation , *SEMICONDUCTOR doping , *CONTACT mechanics , *PENTACENE , *IMPURITY distribution in semiconductors - Abstract
Abstract: Organic thin film transistors (OTFTs) with different concentrations of tetrafluorotetracyanoquinodimethane (-TCNQ) doped pentacene interlayer were fabricated. When a 2 wt% -TCNQ doped pentacene layer was incorporated between gold electrodes and a pentacene layer, the performance of the OTFT was significantly improved. The saturation mobility increased from 0.21 to , the threshold voltage was reduced from −31.9 to −7.6 V, and the threshold swing varied from 5.09 to 2.40 V/dec as compared with an OTFT without interlayer. This improvement was ascribed to the reduction of the hole-injection barrier and contact resistance. Our results indicated that contact-area-limited doping is an effective way to improve OTFT performance. [Copyright &y& Elsevier]
- Published
- 2009
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