Title :
[6,6]-Phenyl C61 butyric acid methyl ester/α-sexithiophene hetero-junction thin film transistors gas sensors for ammonia detection
Author :
Yuyan Chen;Guangzhong Xie;Tao Xie;Hongfei Du;Qiuping Zhang;Yuanjie Su;Yadong Jiang
Author_Institution :
School of Optoelectronic Information, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China (UESTC), Chengdu, P. R. China
Abstract :
In this paper, hetero-junction structure of composite film based on α-6T/ PC61BM was firstly utilized as active layer of OTFT gas sensor for detecting ammonia gas (NH3). The electrical characteristics, gas sensing performances based on α-6T/PC61BM composite film and pure α-6T film were tested and compared. It could be found that the sensitivity of α-6T/PC61BM composite film was much higher than pure α-6T film, increasing from 1.02 × 10-3 ppm-1 to 3.63 × 10-3 ppm-1. In addition, the sensing mechanisms of all sensors were studied as well.
Keywords :
"Organic thin film transistors","Films","Gas detectors","Heterojunctions","Sensitivity"
Conference_Titel :
SENSORS, 2015 IEEE
DOI :
10.1109/ICSENS.2015.7370577
