التفاصيل البيبلوغرافية
| العنوان: |
Improved NO2Gas-Sensing Performance of an Organic Field-Effect Transistor Based on Reduced Graphene Oxide-Incorporated Nanoporous Conjugated Polymer Thin Films |
| المؤلفون: |
Shin, Seo Young, Jeong, Ganghoon, Phu, Nann Aye Mya Mya, Cheon, Hyeonseo, Tran, Vinh Van, Yoon, Hyeonseok, Chang, Mincheol |
| المصدر: |
Chemistry of Materials; September 2023, Vol. 35 Issue: 18 p7460-7474, 15p |
| مستخلص: |
In this study, we have described a simple method for enhancing the NO2-sensing performance of the organic field-effect transistor (OFET) sensors at room temperature through reduced graphene oxide (rGO)-incorporated nanoporous P3HT films using the shear coating-assisted phase separation technique. The morphologies, microstructures, photophysical properties, and electrical properties of rGO-incorporated nanoporous P3HT films were investigated by atomic force microscopy, optical microscopy, ultraviolet–visible spectroscopy, X-ray diffraction analysis, Raman spectroscopy, and charge-carrier mobility measurements. The synergistic effect of P3HT pores acting as analyte diffusion pathways and rGO acting as adsorption sites resulted in a significant variation of the electrical properties of nanoporous P3HT/rGO OFETs upon exposure to NO2gas molecules, indicating the potential of OFETs as efficient NO2sensors. Specifically, the new nanoporous OFET sensors based on rGO-incorporated nanoporous P3HT films exhibited significantly improved responsivity with a value of ∼61.3% for 10 ppm NO2gas compared to those based on nonporous P3HT/PS/rGO composite films (∼17.7%). Moreover, excellent response and recovery behaviors (response time = ∼62 s and recovery time = ∼145 s), high sensitivity (∼1.48 ppm–1), and good selectivity were observed. |
| قاعدة البيانات: |
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