迟力峰教授课题组在Advanced Materials上发表论文

发布时间:2017-08-31访问量:231设置

题目:

An Ultrasensitive Organic Semiconductor NO2 Sensor Based on Crystalline TIPS-Pentacene Films

作者:

Zi Wang, Lizhen Huang, Xiaofei Zhu, Xu Zhou, and Lifeng Chi*

单位:

Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nanoscience and Technology, Soochow University, 199 Ren-AiRoad, Suzhou 215123, China.

摘要:

Organic semiconductor gas sensor is one of the promising candidates of room temperature operated gas sensors with high selectivity. However, for a long time the performance of organic semiconductor sensors, especially for the detection of oxidizing gases, is far behind that of the traditional metal oxide gas sensors. Although intensive attempts have been made to address the problem, the performance and   the understanding of the sensing mechanism are still far from sufficient. Herein, an ultrasensitive organic semiconductor NO2 sensor based on 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-petacene) is reported. The device achieves a sensitivity over1000%/ppm and fast response/recovery, together with a low limit of detection (LOD) of 20 ppb, all of which reach   the level of metal oxide sensors. After a comprehensive analysis on the   morphology and electrical properties of the organic films, it is revealed that the ultrahigh performance is largely related to the film charge transport ability, which was less concerned in the studies previously. And the combination of efficient charge transport and low original charge carrier concentration is demonstrated to be an effective access to obtain high performance organic semiconductor gas sensors.

影响因子:

19.791

分区情况:

一区

链接:

http://onlinelibrary.wiley.com/doi/10.1002/adma.201703192/epdf



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