新型pH-ISFET芯片系统研究
doi: 10.3724/SP.J.1146.2006.00973
A New Type of the System-on-Chip Based on pH-ISFET
-
摘要: 该文研究设计一种新型ISFET/REFET/PRE传感器与信号检测电路集成于一体的芯片系统。采用商业标准CMOS工艺实现了基础集成芯片，探索研究与集成芯片兼容的敏感薄膜制备技术及其相关后续工艺，着重研究电聚合法制备的H+敏感PPy膜；与采用低温Ta2O5敏感薄膜技术研制的集成芯片进行了比较。集成芯片具有灵敏度54mV/pH，响应时间0.1s，在pH1～12范围内线性相关系数99.99%的优良性能。Abstract: A new type of System-On-Chip (SOC) integrated with ISFET/REFET/PRE and their signal detection circuits is developed. Carring out the basic chip with commercial standard CMOS processes, the preparation technique of sensitivity membrane compatible with the SOC and interrelated follow-up processes are explored, the H+ sensitive Polypyrrole (Ppy) membrane is emphatically studied by electrochemical polymerization; It is compared with the SOC which developed by low temperature Ta2O5 preparation technique. The new SOC has the sensitivity of 54mV/pH, response time of 0.1s, linear correlation coefficient of 99.99% within the pH range from 1 to 12.
-
Bergveld P. Development of an ion-sensitive solid-state device for neurophysiological measurements[J].IEEE Transactions on Bio-Medical Engineering.1970, 17(1):70-71[2]Wei Jinbao, Yang Haigang, and Sun Hongguang, et al.. A full CMOS integration including ISFET microsensors and interface circuits for biochemical applications. The 6th East Asia Conference on Chemical Sensors, Guilin, China, 2005.9: 280-281.[3]Shiu Kwok-Keung, Song Fa-yi, and Lau Kam-wing. Effects of polymer thickness on the potentiometric pH responses of polypyrrole modified glassy carbon electrodes[J].Journal of Electroanalytical Chemistry.1999, 476(2):109-117[4]Mao Xiaoping, Wang Jixiao, and Wang Zhi, et al.. Potentiometric pH responses of fibrillar polypyrrole modified electrodes[J].Sensors and Actuators B.2003, 96(3):533-536[5]薛晓康, 郭兴蓬, 余成平. 电位型聚吡咯pH传感器的制备. 应用化学, 2005, 22(4): 435-439.[6]Fang Yue, Tan Swee Ngin, and Ge Hailin. A novel paper pH sensor based on polypyrrole[J].Sensors and Actuators B.1996, 32(1):33-39 -
计量
- 文章访问数: 3226
- HTML全文浏览量: 81
- PDF下载量: 1008
- 被引次数: 0
下载:
