title: Organic Field-Effect Transistors with Macroporous Semiconductor Films as High-Performance Humidity Sensors.
abstract: In this study, we designed and fabricated a high-performance humidity sensor based on a donor-acceptor polymer transistor. To improve its sensing performance, a polymeric semiconductor film with macroporous structure was prepared using a facilitated phase-separation method. The relationship between the sensing performance and the pore size was systematically investigated by testing the humidity-sensing performance. The results suggested that the sensitivity of the sensor was improved with increasing pore size within a certain range. The sensor based on the macroporous film with an average pore size of 154 nm exhibited a sensitivity of 415 and a response time of 0.68 s, as the low relative humidity (RH) changed from 32% RH (9146 ppm) to 69% RH (20 036 ppm). These sensitivity values are better than those obtained by other reported humidity sensors based on organic field-effect transistors.
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology , Hefei 230009, China.
authors.forename: Shaohua
authors.initials: S
authors.lastname: Wu
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology , Hefei 230009, China.
authors.forename: Guiheng
authors.initials: G
authors.lastname: Wang
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology , Hefei 230009, China.
authors.forename: Zhan
authors.initials: Z
authors.lastname: Xue
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology , Hefei 230009, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Ge
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology , Hefei 230009, China.|Key Laboratory of Advanced Functional Materials and Devices, Anhui Province School of Chemistry and Chemical Engineering, Hefei University of Technology , Hefei 230009, China.
authors.forename: Guobing
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology , Hefei 230009, China.|Key Laboratory of Advanced Functional Materials and Devices, Anhui Province School of Chemistry and Chemical Engineering, Hefei University of Technology , Hefei 230009, China.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Lu
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology , Hefei 230009, China.|Key Laboratory of Advanced Functional Materials and Devices, Anhui Province School of Chemistry and Chemical Engineering, Hefei University of Technology , Hefei 230009, China.
authors.forename: Longzhen
authors.identifier: http://orcid.org/0000-0001-9454-3206
authors.initials: L
authors.lastname: Qiu
keywords: controllable pore size; humidity sensors; macroporous film; organic field-effect transistors; phase separation