Low-voltage extended gate organic thin film transistors for ion sensing based on semi-conducting polymer electrodes

Ji, Shiliang1,2; Sun, Qi-Jun1,2; Venkatesh, Shishir1,2; Yan, Yan1,2; Zhou, Ye1,2; Zhuang, Jiaqing1,2; Zhou, Li1,2; Han, Suting1,2; Xu, Zong-Xiang3; Roy, V. A. L.1,2

10.1117/12.2218397

2016

1996756X

OXIDE-BASED MATERIALS AND DEVICES VII

9749

San Francisco, CA, United states

1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA

SPIE-INT SOC OPTICAL ENGINEERING

We report a low-voltage organic field-effect transistor consisting of an extended gate sensory area to detect various ions in a solution. The device distinguishes various ions by the shift in threshold voltage and is sensitive to multiple ions with various concentrations. X-ray photoelectron spectroscopy measurements and the resistance changes at the sensor area prove that the ions are doped into the sensitive film at the sensor area. Because of the effect of doping, the conductivity of the semiconductor polymer film changes thus causing a threshold voltage shift.

low voltage ions detector sensor organic field-effect transistors

其他

英语

CPCI-S ; EI

Optics ; Physics

Optics ; Physics, Applied

WOS:000382989200015

20163302712844

Conducting polymers ; Ions ; Polymer films ; Semiconducting films ; Semiconductor doping ; Sensors ; Thin film circuits ; Thin film transistors ; Thin films ; Threshold voltage ; X ray photoelectron spectroscopy

Electricity: Basic Concepts and Phenomena:701.1 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Polymeric Materials:815.1

Web of Science

1.City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon Tong, Hong Kong, Peoples R China
2.City Univ Hong Kong, State Key Lab Millimetter Waves, Kowloon Tong, Hong Kong, Peoples R China
3.South Univ Sci & Technol China, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China

Ji, Shiliang,Sun, Qi-Jun,Venkatesh, Shishir,et al. Low-voltage extended gate organic thin film transistors for ion sensing based on semi-conducting polymer electrodes[C]. 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA:SPIE-INT SOC OPTICAL ENGINEERING,2016.