Realization of an Ultrasensitive and Highly Selective OFET NO2 Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF
Surya, Sandeep Goud
Vijjapu, Mani Teja
Salama, Khaled N.
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Chemical Science Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Functional Materials Design, Discovery and Development (FMD3)
Physical Science and Engineering (PSE) Division
Embargo End Date2021-04-13
Permanent link to this recordhttp://hdl.handle.net/10754/662532
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AbstractOrganic field-effect transistors (OFETs) are emerging as competitive candidates for gas sensing applications due to the ease of their fabrication process combined with the ability to readily fine-tune the properties of organic semiconductors. Nevertheless, some key challenges remain to be addressed, such as material degradation, low sensitivity, and poor selectivity toward toxic gases. Appropriately, a heterojunction combination of different sensing layers with multifunctional capabilities offers great potential to overcome these problems. Here, a novel and highly sensitive receptor layer is proposed encompassing a porous 3D metal-organic framework (MOF) based on isostructural-fluorinated MOFs acting as an NO2 specific preconcentrator, on the surface of a stable and ultrathin PDVT-10 organic semiconductor on an OFET platform. Here, with this proposed combination we have unveiled an unprecedented 700% increase in sensitivity toward NO2 analyte in contrast to the pristine PDVT-10. The resultant combination for this OFET device exhibits a remarkable lowest detection limit of 8.25 ppb, a sensitivity of 680 nA/ppb, and good stability over a period of 6 months under normal laboratory conditions. Further, a negligible response (4.232 nA/%RH) toward humidity in the range of 5%-90% relative humidity was demonstrated using this combination. Markedly, the obtained results support the use of the proposed novel strategy to achieve an excellent sensing performance with an OFET platform.
CitationYuvaraja, S., Surya, S. G., Chernikova, V., Vijjapu, M. T., Shekhah, O., Bhatt, P. M., … Salama, K. N. (2020). Realization of an Ultrasensitive and Highly Selective OFET NO2 Sensor: The Synergistic Combination of PDVT-10 Polymer and Porphyrin–MOF. ACS Applied Materials & Interfaces. doi:10.1021/acsami.0c00803
SponsorsWe acknowledge the financial support from King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
PublisherAmerican Chemical Society (ACS)
CollectionsArticles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Functional Materials Design, Discovery and Development (FMD3); Electrical Engineering Program; Chemical Science Program; Sensors Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
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