標題: | A Novel pH Sensor of Extended-Gate Field-Effect Transistors With Laser-Irradiated Carbon-Nanotube Network |
作者: | Chien, Yun-Shan Tsai, Wan-Lin Lee, I-Che Chou, Jung-Chuan Cheng, Huang-Chung 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
關鍵字: | Carbon-nanotube (CNT) network;extended-gate field-effect transistor (EGFET);modified multiwalled carbon nanotube (MWCNT);pH sensor |
公開日期: | 1-十一月-2012 |
摘要: | The extended-gate field-effect transistors (EGFETs) with only the carbon-nanotube (CNT) thin film as both the sensing membrane and the contact electrode have been demonstrated for the first time to exhibit superior pH sensing characteristics. The continuous-wave laser was necessary to improve the pH sensitivity to be 50.9 mV/pH and the linearity values to be 0.9978 for pH = 3 to pH = 13 wide sensing range, respectively. It implied that the laser energy would unzip the chemically modified multiwalled CNTs (MWCNTs) into numerous graphite slices, resulting in the elevated sensing sites and the improved electrical and sensing properties. Therefore, the laser-irradiated MWCNT network is promising for the applications in the flexible and transparent pH-EGFETs. |
URI: | http://dx.doi.org/10.1109/LED.2012.2213794 http://hdl.handle.net/11536/20404 |
ISSN: | 0741-3106 |
DOI: | 10.1109/LED.2012.2213794 |
期刊: | IEEE ELECTRON DEVICE LETTERS |
Volume: | 33 |
Issue: | 11 |
起始頁: | 1622 |
結束頁: | 1624 |
顯示於類別: | 期刊論文 |