TY - JOUR
T1 - Diketopyrrolopyrrole-based polymer transistors for hazardous volatile organic compound detection
AU - Ryu, Gi Seong
AU - Nketia-Yawson, Benjamin
AU - Choi, Eun Young
AU - Noh, Yong Young
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/12
Y1 - 2017/12
N2 - Here, we report on highly sensitive OTFT sensors based on ultrathin poly[[2,5-bis(2-octyldodecyl)-2,3,5,6-tetrahydro-3,6-dioxopyrrolo[3,4-c]pyrrole-1,4-diyl]-alt-[[2,2′-(2,5-thiophene)bis-thieno(3,2-b)thiophene]-5,5′-diyl]] (DPPT-TT) organic thin film transistors (OTFTs) for detection of volatile organic compounds (VOCs). The flexible ultrathin DPPT-TT-OTFT sensors show high sensitivity of ∼87% in the exposed ammonia compared to ethanol and ethylene gases, which is ascribed to severe hole trapping in the semiconducting channel. Additionally, the gas sensor exhibit intense alteration of the OTFT performance parameters, including turn-on voltage, threshold voltage, and on and off current to common VOCs, such as 2-propanol, trichloroethylene, and 1,2-dichloroethane. In particular high sensitivity with good reversibility is achieved in the exposed 2-propanol.This work demonstrates that OTFTs with the dye-based conjugated polymers have great potential to realize real-time monitoring of various hazardous VOCs.
AB - Here, we report on highly sensitive OTFT sensors based on ultrathin poly[[2,5-bis(2-octyldodecyl)-2,3,5,6-tetrahydro-3,6-dioxopyrrolo[3,4-c]pyrrole-1,4-diyl]-alt-[[2,2′-(2,5-thiophene)bis-thieno(3,2-b)thiophene]-5,5′-diyl]] (DPPT-TT) organic thin film transistors (OTFTs) for detection of volatile organic compounds (VOCs). The flexible ultrathin DPPT-TT-OTFT sensors show high sensitivity of ∼87% in the exposed ammonia compared to ethanol and ethylene gases, which is ascribed to severe hole trapping in the semiconducting channel. Additionally, the gas sensor exhibit intense alteration of the OTFT performance parameters, including turn-on voltage, threshold voltage, and on and off current to common VOCs, such as 2-propanol, trichloroethylene, and 1,2-dichloroethane. In particular high sensitivity with good reversibility is achieved in the exposed 2-propanol.This work demonstrates that OTFTs with the dye-based conjugated polymers have great potential to realize real-time monitoring of various hazardous VOCs.
KW - Conjugated polymer
KW - Diketopyrrolopyrrole
KW - Gas sensor
KW - Organic thin-film transistors
KW - Volatile organic compounds
UR - http://www.scopus.com/inward/record.url?scp=85029525791&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2017.09.033
DO - 10.1016/j.orgel.2017.09.033
M3 - Article
AN - SCOPUS:85029525791
SN - 1566-1199
VL - 51
SP - 264
EP - 268
JO - Organic Electronics
JF - Organic Electronics
ER -